64506812 has 24 divisors (see below), whose sum is σ = 118444032. Its totient is φ = 30681200.

The previous prime is 64506803. The next prime is 64506833. The reversal of 64506812 is 21860546.

It is a super-2 number, since 2×64506812² = 8322257588806688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15737 + ... + 19407.

It is an arithmetic number, because the mean of its divisors is an integer number (4935168).

Almost surely, 2^64506812 is an apocalyptic number.

It is an amenable number.

64506812 is a deficient number, since it is larger than the sum of its proper divisors (53937220).

64506812 is a wasteful number, since it uses less digits than its factorization.

64506812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889 (or 3887 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 64506812 is about 8031.6132875033. The cubic root of 64506812 is about 401.0530834385.

The spelling of 64506812 in words is "sixty-four million, five hundred six thousand, eight hundred twelve".