164623755 has 16 divisors (see below), whose sum is σ = 266734080. Its totient is φ = 86687328.

The previous prime is 164623717. The next prime is 164623759. The reversal of 164623755 is 557326461.

It is not a de Polignac number, because 164623755 - 2¹² = 164619659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164623759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68277 + ... + 70646.

It is an arithmetic number, because the mean of its divisors is an integer number (16670880).

Almost surely, 2^164623755 is an apocalyptic number.

164623755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164623755 is a deficient number, since it is larger than the sum of its proper divisors (102110325).

164623755 is a wasteful number, since it uses less digits than its factorization.

164623755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139010.

The product of its digits is 151200, while the sum is 39.

The square root of 164623755 is about 12830.5789035413. The cubic root of 164623755 is about 548.0634428031.

The spelling of 164623755 in words is "one hundred sixty-four million, six hundred twenty-three thousand, seven hundred fifty-five".