64198680 has 128 divisors (see below), whose sum is σ = 237081600. Its totient is φ = 13542912.

The previous prime is 64198669. The next prime is 64198703. The reversal of 64198680 is 8689146.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 7981 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^64198680 is an apocalyptic number.

64198680 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 64198680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118540800).

64198680 is an abundant number, since it is smaller than the sum of its proper divisors (172882920).

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

64198680 is a wasteful number, since it uses less digits than its factorization.

64198680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5913 (or 5909 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 64198680 is about 8012.4078777856. The cubic root of 64198680 is about 400.4134890863.

The spelling of 64198680 in words is "sixty-four million, one hundred ninety-eight thousand, six hundred eighty".