64732980 has 96 divisors (see below), whose sum is σ = 200559744. Its totient is φ = 15496704.

The previous prime is 64732951. The next prime is 64732999. The reversal of 64732980 is 8923746.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27739 + ... + 29981.

It is an arithmetic number, because the mean of its divisors is an integer number (2089164).

Almost surely, 2^64732980 is an apocalyptic number.

64732980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64732980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100279872).

64732980 is an abundant number, since it is smaller than the sum of its proper divisors (135826764).

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

64732980 is a wasteful number, since it uses less digits than its factorization.

64732980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305 (or 2303 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 64732980 is about 8045.6808288671. The cubic root of 64732980 is about 401.5212488373.

It can be divided in two parts, 6473 and 2980, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 64732980 in words is "sixty-four million, seven hundred thirty-two thousand, nine hundred eighty".