64384980 has 48 divisors (see below), whose sum is σ = 196668864. Its totient is φ = 15608320.

The previous prime is 64384979. The next prime is 64384987. The reversal of 64384980 is 8948346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64384987) by changing a digit.

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, 48117 + ... + 49436.

It is an arithmetic number, because the mean of its divisors is an integer number (4097268).

Almost surely, 2^64384980 is an apocalyptic number.

64384980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64384980 is an abundant number, since it is smaller than the sum of its proper divisors (132283884).

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

64384980 is a wasteful number, since it uses less digits than its factorization.

64384980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97576 (or 97574 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 64384980 is about 8024.0251744371. The cubic root of 64384980 is about 400.8004388424.

The spelling of 64384980 in words is "sixty-four million, three hundred eighty-four thousand, nine hundred eighty".