64904049 has 48 divisors (see below), whose sum is σ = 111820800. Its totient is φ = 35497440.

The previous prime is 64904041. The next prime is 64904053. The reversal of 64904049 is 94040946.

64904049 is a `hidden beast` number, since 649 + 0 + 4 + 0 + 4 + 9 = 666.

It is not a de Polignac number, because 64904049 - 2³ = 64904041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64904041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 326052 + ... + 326250.

It is an arithmetic number, because the mean of its divisors is an integer number (2329600).

Almost surely, 2^64904049 is an apocalyptic number.

It is an amenable number.

64904049 is a deficient number, since it is larger than the sum of its proper divisors (46916751).

64904049 is a wasteful number, since it uses less digits than its factorization.

64904049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 64904049 is about 8056.3049222333. The cubic root of 64904049 is about 401.8746360410.

The spelling of 64904049 in words is "sixty-four million, nine hundred four thousand, forty-nine".