64630044 has 18 divisors (see below), whose sum is σ = 163370480. Its totient is φ = 21543336.

The previous prime is 64630043. The next prime is 64630051. The reversal of 64630044 is 44003646.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64630043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 897604 + ... + 897675.

Almost surely, 2^64630044 is an apocalyptic number.

It is an amenable number.

64630044 is an abundant number, since it is smaller than the sum of its proper divisors (98740436).

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

64630044 is a wasteful number, since it uses less digits than its factorization.

64630044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795289 (or 1795284 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 64630044 is about 8039.2813111621. The cubic root of 64630044 is about 401.3083078278.

The spelling of 64630044 in words is "sixty-four million, six hundred thirty thousand, forty-four".