164270657 has 4 divisors (see below), whose sum is σ = 164395776. Its totient is φ = 164145540.

The previous prime is 164270653. The next prime is 164270693. The reversal of 164270657 is 756072461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 756072461 = 73 ⋅10357157.

It is a cyclic number.

It is not a de Polignac number, because 164270657 - 2² = 164270653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164270657.

It is not an unprimeable number, because it can be changed into a prime (164270651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60569 + ... + 63222.

It is an arithmetic number, because the mean of its divisors is an integer number (41098944).

Almost surely, 2^164270657 is an apocalyptic number.

It is an amenable number.

164270657 is a deficient number, since it is larger than the sum of its proper divisors (125119).

164270657 is a wasteful number, since it uses less digits than its factorization.

164270657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125118.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 164270657 is about 12816.8114989649. The cubic root of 164270657 is about 547.6713190992.

The spelling of 164270657 in words is "one hundred sixty-four million, two hundred seventy thousand, six hundred fifty-seven".