64499698 has 16 divisors (see below), whose sum is σ = 99221760. Its totient is φ = 31431616.

The previous prime is 64499693. The next prime is 64499713. The reversal of 64499698 is 89699446.

It is a super-2 number, since 2×64499698² = 8320422084182408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64499693) 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, 23418 + ... + 26026.

It is an arithmetic number, because the mean of its divisors is an integer number (6201360).

Almost surely, 2^64499698 is an apocalyptic number.

64499698 is a deficient number, since it is larger than the sum of its proper divisors (34722062).

64499698 is a wasteful number, since it uses less digits than its factorization.

64499698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921.

The product of its digits is 3359232, while the sum is 55.

The square root of 64499698 is about 8031.1704003837. The cubic root of 64499698 is about 401.0383397939.

The spelling of 64499698 in words is "sixty-four million, four hundred ninety-nine thousand, six hundred ninety-eight".