16197975 has 60 divisors (see below), whose sum is σ = 31658440. Its totient is φ = 8164800.

The previous prime is 16197967. The next prime is 16197977. The reversal of 16197975 is 57979161.

It is not a de Polignac number, because 16197975 - 2³ = 16197967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16197975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16197977) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 38265 + ... + 38685.

Almost surely, 2^16197975 is an apocalyptic number.

16197975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16197975 is a deficient number, since it is larger than the sum of its proper divisors (15460465).

16197975 is a wasteful number, since it uses less digits than its factorization.

16197975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 448 counting only the distinct ones).

The product of its digits is 119070, while the sum is 45.

The square root of 16197975 is about 4024.6707939905. The cubic root of 16197975 is about 253.0192562429.

The spelling of 16197975 in words is "sixteen million, one hundred ninety-seven thousand, nine hundred seventy-five".