264164247 has 20 divisors (see below), whose sum is σ = 395219880. Its totient is φ = 175839984.

The previous prime is 264164171. The next prime is 264164249. The reversal of 264164247 is 742461462.

264164247 is a `hidden beast` number, since 2 + 6 + 4 + 1 + 642 + 4 + 7 = 666.

It is not a de Polignac number, because 264164247 - 2⁷ = 264164119 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264164249) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 60504 + ... + 64722.

It is an arithmetic number, because the mean of its divisors is an integer number (19760994).

Almost surely, 2^264164247 is an apocalyptic number.

264164247 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

264164247 is a deficient number, since it is larger than the sum of its proper divisors (131055633).

264164247 is an equidigital number, since it uses as much as digits as its factorization.

264164247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004 (or 4995 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 264164247 is about 16253.1303754077. The cubic root of 264164247 is about 641.6398757653.

The spelling of 264164247 in words is "two hundred sixty-four million, one hundred sixty-four thousand, two hundred forty-seven".