64703980 has 48 divisors (see below), whose sum is σ = 148780800. Its totient is φ = 23441600.

The previous prime is 64703971. The next prime is 64703999. The reversal of 64703980 is 8930746.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107721 + ... + 108319.

It is an arithmetic number, because the mean of its divisors is an integer number (3099600).

Almost surely, 2^64703980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64703980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74390400).

64703980 is an abundant number, since it is smaller than the sum of its proper divisors (84076820).

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

64703980 is a wasteful number, since it uses less digits than its factorization.

64703980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 64703980 is about 8043.8784177783. The cubic root of 64703980 is about 401.4612801501.

The spelling of 64703980 in words is "sixty-four million, seven hundred three thousand, nine hundred eighty".