164868507 has 8 divisors (see below), whose sum is σ = 244249680. Its totient is φ = 109912320.

The previous prime is 164868443. The next prime is 164868523. The reversal of 164868507 is 705868461.

It is a happy number.

164868507 is a `hidden beast` number, since 1 + 64 + 86 + 8 + 507 = 666.

It is not a de Polignac number, because 164868507 - 2⁶ = 164868443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164868547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3053094 + ... + 3053147.

It is an arithmetic number, because the mean of its divisors is an integer number (30531210).

Almost surely, 2^164868507 is an apocalyptic number.

164868507 is a deficient number, since it is larger than the sum of its proper divisors (79381173).

164868507 is an equidigital number, since it uses as much as digits as its factorization.

164868507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106250 (or 6106244 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 164868507 is about 12840.1132004356. The cubic root of 164868507 is about 548.3349167912.

The spelling of 164868507 in words is "one hundred sixty-four million, eight hundred sixty-eight thousand, five hundred seven".