164590947 has 18 divisors (see below), whose sum is σ = 246847692. Its totient is φ = 109593972.

The previous prime is 164590919. The next prime is 164590949. The reversal of 164590947 is 749095461.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

164590947 is a `hidden beast` number, since 16 + 4 + 590 + 9 + 47 = 666.

It is not a de Polignac number, because 164590947 - 2⁶ = 164590883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164590949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 199578 + ... + 200400.

Almost surely, 2^164590947 is an apocalyptic number.

164590947 is a deficient number, since it is larger than the sum of its proper divisors (82256745).

164590947 is an frugal number, since it uses more digits than its factorization.

164590947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 164590947 is about 12829.3003316627. The cubic root of 164590947 is about 548.0270323834.

The spelling of 164590947 in words is "one hundred sixty-four million, five hundred ninety thousand, nine hundred forty-seven".