164770257 has 8 divisors (see below), whose sum is σ = 227269440. Its totient is φ = 106058960.

The previous prime is 164770247. The next prime is 164770259. The reversal of 164770257 is 752077461.

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

It is a cyclic number.

It is not a de Polignac number, because 164770257 - 2⁷ = 164770129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164770259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946869 + ... + 947042.

It is an arithmetic number, because the mean of its divisors is an integer number (28408680).

Almost surely, 2^164770257 is an apocalyptic number.

It is an amenable number.

164770257 is a deficient number, since it is larger than the sum of its proper divisors (62499183).

164770257 is a wasteful number, since it uses less digits than its factorization.

164770257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893943.

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 164770257 is about 12836.2867294245. The cubic root of 164770257 is about 548.2259721706.

The spelling of 164770257 in words is "one hundred sixty-four million, seven hundred seventy thousand, two hundred fifty-seven".