64990612 has 12 divisors (see below), whose sum is σ = 114006676. Its totient is φ = 32417280.

The previous prime is 64990591. The next prime is 64990657. The reversal of 64990612 is 21609946.

It can be written as a sum of positive squares in 2 ways, for example, as 16353936 + 48636676 = 4044^2 + 6974^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17613 + ... + 20980.

Almost surely, 2^64990612 is an apocalyptic number.

It is an amenable number.

64990612 is a deficient number, since it is larger than the sum of its proper divisors (49016064).

64990612 is a wasteful number, since it uses less digits than its factorization.

64990612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39018 (or 39016 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 64990612 is about 8061.6755082303. The cubic root of 64990612 is about 402.0532177098.

The spelling of 64990612 in words is "sixty-four million, nine hundred ninety thousand, six hundred twelve".