64749836 has 6 divisors (see below), whose sum is σ = 113312220. Its totient is φ = 32374916.

The previous prime is 64749833. The next prime is 64749847. The reversal of 64749836 is 63894746.

It is not an unprimeable number, because it can be changed into a prime (64749833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8093726 + ... + 8093733.

It is an arithmetic number, because the mean of its divisors is an integer number (18885370).

Almost surely, 2^64749836 is an apocalyptic number.

It is an amenable number.

64749836 is a deficient number, since it is larger than the sum of its proper divisors (48562384).

64749836 is a wasteful number, since it uses less digits than its factorization.

64749836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16187463 (or 16187461 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 64749836 is about 8046.7282792449. The cubic root of 64749836 is about 401.5560968895.

The spelling of 64749836 in words is "sixty-four million, seven hundred forty-nine thousand, eight hundred thirty-six".