64435136 has 14 divisors (see below), whose sum is σ = 127863600. Its totient is φ = 32217536.

The previous prime is 64435109. The next prime is 64435153. The reversal of 64435136 is 63153446.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503336 + ... + 503463.

Almost surely, 2^64435136 is an apocalyptic number.

It is an amenable number.

64435136 is a deficient number, since it is larger than the sum of its proper divisors (63428464).

64435136 is a wasteful number, since it uses less digits than its factorization.

64435136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006811 (or 1006801 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 64435136 is about 8027.1499300810. The cubic root of 64435136 is about 400.9044865520.

The spelling of 64435136 in words is "sixty-four million, four hundred thirty-five thousand, one hundred thirty-six".