64766980 has 12 divisors (see below), whose sum is σ = 136010700. Its totient is φ = 25906784.

The previous prime is 64766971. The next prime is 64767013. The reversal of 64766980 is 8966746.

It can be written as a sum of positive squares in 2 ways, for example, as 30824704 + 33942276 = 5552^2 + 5826^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64766980.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1619155 + ... + 1619194.

It is an arithmetic number, because the mean of its divisors is an integer number (11334225).

Almost surely, 2^64766980 is an apocalyptic number.

It is an amenable number.

64766980 is an abundant number, since it is smaller than the sum of its proper divisors (71243720).

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

64766980 is a wasteful number, since it uses less digits than its factorization.

64766980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238358 (or 3238356 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 64766980 is about 8047.7934864160. The cubic root of 64766980 is about 401.5915341490.

It can be divided in two parts, 6476 and 6980, that added together give a square (13456 = 116²).

The spelling of 64766980 in words is "sixty-four million, seven hundred sixty-six thousand, nine hundred eighty".