164697975 has 72 divisors (see below), whose sum is σ = 328225520. Its totient is φ = 80490240.

The previous prime is 164697961. The next prime is 164697983. The reversal of 164697975 is 579796461.

It is not a de Polignac number, because 164697975 - 2¹⁶ = 164632439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1202107 + ... + 1202243.

Almost surely, 2^164697975 is an apocalyptic number.

164697975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164697975 is a deficient number, since it is larger than the sum of its proper divisors (163527545).

164697975 is a wasteful number, since it uses less digits than its factorization.

164697975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 158 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 164697975 is about 12833.4708867087. The cubic root of 164697975 is about 548.1457945415.

The spelling of 164697975 in words is "one hundred sixty-four million, six hundred ninety-seven thousand, nine hundred seventy-five".