64629408 has 24 divisors (see below), whose sum is σ = 169652448. Its totient is φ = 21543104.

The previous prime is 64629403. The next prime is 64629437. The reversal of 64629408 is 80492646.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (64629403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336516 + ... + 336707.

It is an arithmetic number, because the mean of its divisors is an integer number (7068852).

Almost surely, 2^64629408 is an apocalyptic number.

It is an amenable number.

64629408 is an abundant number, since it is smaller than the sum of its proper divisors (105023040).

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

64629408 is a wasteful number, since it uses less digits than its factorization.

64629408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673236 (or 673228 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 64629408 is about 8039.2417552901. The cubic root of 64629408 is about 401.3069914487.

The spelling of 64629408 in words is "sixty-four million, six hundred twenty-nine thousand, four hundred eight".