64499536 has 10 divisors (see below), whose sum is σ = 124967882. Its totient is φ = 32249760.

The previous prime is 64499507. The next prime is 64499537. The reversal of 64499536 is 63599446.

64499536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 63107136 + 1392400 = 7944^2 + 1180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64499537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015595 + ... + 2015626.

Almost surely, 2^64499536 is an apocalyptic number.

It is an amenable number.

64499536 is a deficient number, since it is larger than the sum of its proper divisors (60468346).

64499536 is a wasteful number, since it uses less digits than its factorization.

64499536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031229 (or 4031223 counting only the distinct ones).

The product of its digits is 699840, while the sum is 46.

The square root of 64499536 is about 8031.1603146743. The cubic root of 64499536 is about 401.0380040390.

The spelling of 64499536 in words is "sixty-four million, four hundred ninety-nine thousand, five hundred thirty-six".