64499866 has 16 divisors (see below), whose sum is σ = 102240000. Its totient is φ = 30455568.

The previous prime is 64499861. The next prime is 64499873. The reversal of 64499866 is 66899446.

It is not an unprimeable number, because it can be changed into a prime (64499861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5241 + ... + 12508.

It is an arithmetic number, because the mean of its divisors is an integer number (6390000).

Almost surely, 2^64499866 is an apocalyptic number.

64499866 is a deficient number, since it is larger than the sum of its proper divisors (37740134).

64499866 is a wasteful number, since it uses less digits than its factorization.

64499866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17853.

The product of its digits is 2239488, while the sum is 52.

The square root of 64499866 is about 8031.1808596246. The cubic root of 64499866 is about 401.0386879836.

The spelling of 64499866 in words is "sixty-four million, four hundred ninety-nine thousand, eight hundred sixty-six".