1264904 has 8 divisors (see below), whose sum is σ = 2371710. Its totient is φ = 632448.

The previous prime is 1264903. The next prime is 1264909. The reversal of 1264904 is 4094621.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 362404 = 950^2 + 602^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1264903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79049 + ... + 79064.

2^1264904 is an apocalyptic number.

It is an amenable number.

1264904 is a deficient number, since it is larger than the sum of its proper divisors (1106806).

1264904 is a wasteful number, since it uses less digits than its factorization.

1264904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158119 (or 158115 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1264904 is about 1124.6795099049. The cubic root of 1264904 is about 108.1481733886.

The spelling of 1264904 in words is "one million, two hundred sixty-four thousand, nine hundred four".