64908663 has 8 divisors (see below), whose sum is σ = 86875008. Its totient is φ = 43107384.

The previous prime is 64908659. The next prime is 64908671. The reversal of 64908663 is 36680946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64908663 - 2² = 64908659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64908463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40345 + ... + 41922.

It is an arithmetic number, because the mean of its divisors is an integer number (10859376).

Almost surely, 2^64908663 is an apocalyptic number.

64908663 is a deficient number, since it is larger than the sum of its proper divisors (21966345).

64908663 is a wasteful number, since it uses less digits than its factorization.

64908663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82533.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 64908663 is about 8056.5912767125. The cubic root of 64908663 is about 401.8841588451.

The spelling of 64908663 in words is "sixty-four million, nine hundred eight thousand, six hundred sixty-three".