64198120 has 64 divisors (see below), whose sum is σ = 174804480. Its totient is φ = 20714496.

The previous prime is 64198109. The next prime is 64198151. The reversal of 64198120 is 2189146.

64198120 = 18² + 19² + ... + 577².

It is a happy number.

It is a super-2 number, since 2×64198120² = 8242797223068800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1984 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (2731320).

Almost surely, 2^64198120 is an apocalyptic number.

It is an amenable number.

64198120 is an abundant number, since it is smaller than the sum of its proper divisors (110606360).

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

64198120 is a wasteful number, since it uses less digits than its factorization.

64198120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13522 (or 13518 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 64198120 is about 8012.3729319097. The cubic root of 64198120 is about 400.4123248246.

The spelling of 64198120 in words is "sixty-four million, one hundred ninety-eight thousand, one hundred twenty".