196647671 has 8 divisors (see below), whose sum is σ = 219089664. Its totient is φ = 174966520.

The previous prime is 196647641. The next prime is 196647683. The reversal of 196647671 is 176746691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196647671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196647611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189665 + ... + 190698.

It is an arithmetic number, because the mean of its divisors is an integer number (27386208).

Almost surely, 2^196647671 is an apocalyptic number.

196647671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

196647671 is a deficient number, since it is larger than the sum of its proper divisors (22441993).

196647671 is a wasteful number, since it uses less digits than its factorization.

196647671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380421.

The product of its digits is 381024, while the sum is 47.

The square root of 196647671 is about 14023.1120297885. The cubic root of 196647671 is about 581.5176967718.

The spelling of 196647671 in words is "one hundred ninety-six million, six hundred forty-seven thousand, six hundred seventy-one".