64736436 has 24 divisors (see below), whose sum is σ = 151240320. Its totient is φ = 21551872.

The previous prime is 64736411. The next prime is 64736443. The reversal of 64736436 is 63463746.

It is a super-2 number, since 2×64736436² = 8381612291964192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64736394 and 64736403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8245 + ... + 14051.

It is an arithmetic number, because the mean of its divisors is an integer number (6301680).

Almost surely, 2^64736436 is an apocalyptic number.

It is an amenable number.

64736436 is an abundant number, since it is smaller than the sum of its proper divisors (86503884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64736436 is a wasteful number, since it uses less digits than its factorization.

64736436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743 (or 6741 counting only the distinct ones).

The product of its digits is 217728, while the sum is 39.

The square root of 64736436 is about 8045.8955996210. The cubic root of 64736436 is about 401.5283942560.

The spelling of 64736436 in words is "sixty-four million, seven hundred thirty-six thousand, four hundred thirty-six".