164723957 has 8 divisors (see below), whose sum is σ = 166056576. Its totient is φ = 163395792.

The previous prime is 164723903. The next prime is 164723971. The reversal of 164723957 is 759327461.

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 164723957 - 2¹² = 164719861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164723257) 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 7 ways as a sum of consecutive naturals, for example, 125768 + ... + 127070.

It is an arithmetic number, because the mean of its divisors is an integer number (20757072).

Almost surely, 2^164723957 is an apocalyptic number.

It is an amenable number.

164723957 is a deficient number, since it is larger than the sum of its proper divisors (1332619).

164723957 is a wasteful number, since it uses less digits than its factorization.

164723957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227.

The product of its digits is 317520, while the sum is 44.

The square root of 164723957 is about 12834.4831216532. The cubic root of 164723957 is about 548.1746173512.

The spelling of 164723957 in words is "one hundred sixty-four million, seven hundred twenty-three thousand, nine hundred fifty-seven".