196572645 has 12 divisors (see below), whose sum is σ = 340725996. Its totient is φ = 104838720.

The previous prime is 196572641. The next prime is 196572647. The reversal of 196572645 is 546275691.

196572645 is a `hidden beast` number, since 19 + 6 + 572 + 64 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80838081 + 115734564 = 8991^2 + 10758^2 .

It is not a de Polignac number, because 196572645 - 2² = 196572641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4368281 = 196572645 / (1 + 9 + 6 + 5 + 7 + 2 + 6 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 196572645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196572641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2184096 + ... + 2184185.

It is an arithmetic number, because the mean of its divisors is an integer number (28393833).

Almost surely, 2^196572645 is an apocalyptic number.

196572645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

196572645 is a deficient number, since it is larger than the sum of its proper divisors (144153351).

196572645 is a wasteful number, since it uses less digits than its factorization.

196572645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368292 (or 4368289 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 196572645 is about 14020.4366907739. The cubic root of 196572645 is about 581.4437328542.

The spelling of 196572645 in words is "one hundred ninety-six million, five hundred seventy-two thousand, six hundred forty-five".