264336642 has 32 divisors (see below), whose sum is σ = 588994560. Its totient is φ = 87875280.

The previous prime is 264336617. The next prime is 264336643. The reversal of 264336642 is 246633462.

264336642 is a `hidden beast` number, since 2 + 6 + 4 + 3 + 3 + 6 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 264336597 and 264336606.

It is not an unprimeable number, because it can be changed into a prime (264336643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14292 + ... + 27072.

It is an arithmetic number, because the mean of its divisors is an integer number (18406080).

Almost surely, 2^264336642 is an apocalyptic number.

264336642 is an abundant number, since it is smaller than the sum of its proper divisors (324657918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264336642 is a wasteful number, since it uses less digits than its factorization.

264336642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13175 (or 13169 counting only the distinct ones).

The product of its digits is 124416, while the sum is 36.

The square root of 264336642 is about 16258.4329503184. The cubic root of 264336642 is about 641.7794246175.

The spelling of 264336642 in words is "two hundred sixty-four million, three hundred thirty-six thousand, six hundred forty-two".