64990344 has 16 divisors (see below), whose sum is σ = 162475920. Its totient is φ = 21663440.

The previous prime is 64990333. The next prime is 64990351. The reversal of 64990344 is 44309946.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353942 + ... + 1353989.

It is an arithmetic number, because the mean of its divisors is an integer number (10154745).

Almost surely, 2^64990344 is an apocalyptic number.

It is an amenable number.

64990344 is an abundant number, since it is smaller than the sum of its proper divisors (97485576).

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

64990344 is a wasteful number, since it uses less digits than its factorization.

64990344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707940 (or 2707936 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 64990344 is about 8061.6588863583. The cubic root of 64990344 is about 402.0526650637.

The spelling of 64990344 in words is "sixty-four million, nine hundred ninety thousand, three hundred forty-four".