64908506 has 12 divisors (see below), whose sum is σ = 105428862. Its totient is φ = 29957616.

The previous prime is 64908469. The next prime is 64908509. The reversal of 64908506 is 60580946.

It can be written as a sum of positive squares in 3 ways, for example, as 20566225 + 44342281 = 4535^2 + 6659^2 .

It is a super-2 number, since 2×64908506² = 8426228302304072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64908506.

It is not an unprimeable number, because it can be changed into a prime (64908509) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 95681 + ... + 96356.

Almost surely, 2^64908506 is an apocalyptic number.

64908506 is a deficient number, since it is larger than the sum of its proper divisors (40520356).

64908506 is a wasteful number, since it uses less digits than its factorization.

64908506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192065 (or 192052 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 64908506 is about 8056.5815331318. The cubic root of 64908506 is about 401.8838348213.

The spelling of 64908506 in words is "sixty-four million, nine hundred eight thousand, five hundred six".