64402808 has 8 divisors (see below), whose sum is σ = 120755280. Its totient is φ = 32201400.

The previous prime is 64402801. The next prime is 64402861. The reversal of 64402808 is 80820446.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64402801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4025168 + ... + 4025183.

It is an arithmetic number, because the mean of its divisors is an integer number (15094410).

Almost surely, 2^64402808 is an apocalyptic number.

It is an amenable number.

64402808 is a deficient number, since it is larger than the sum of its proper divisors (56352472).

64402808 is a wasteful number, since it uses less digits than its factorization.

64402808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050357 (or 8050353 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 64402808 is about 8025.1360113085. The cubic root of 64402808 is about 400.8374288920.

The spelling of 64402808 in words is "sixty-four million, four hundred two thousand, eight hundred eight".