264978135 has 36 divisors (see below), whose sum is σ = 477328488. Its totient is φ = 141019056.

The previous prime is 264978113. The next prime is 264978137. The reversal of 264978135 is 531879462.

264978135 is a `hidden beast` number, since 26 + 497 + 8 + 135 = 666.

It is not a de Polignac number, because 264978135 - 2⁶ = 264978071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264978137) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 567172 + ... + 567638.

Almost surely, 2^264978135 is an apocalyptic number.

264978135 is a deficient number, since it is larger than the sum of its proper divisors (212350353).

264978135 is an frugal number, since it uses more digits than its factorization.

264978135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 475 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 264978135 is about 16278.1490041098. The cubic root of 264978135 is about 642.2981626652.

The spelling of 264978135 in words is "two hundred sixty-four million, nine hundred seventy-eight thousand, one hundred thirty-five".