64720098 has 24 divisors (see below), whose sum is σ = 140412636. Its totient is φ = 21544800.

The previous prime is 64720069. The next prime is 64720111. The reversal of 64720098 is 89002746.

64720098 is a `hidden beast` number, since 647 + 2 + 0 + 0 + 9 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59397849 + 5322249 = 7707^2 + 2307^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15028 + ... + 18848.

Almost surely, 2^64720098 is an apocalyptic number.

64720098 is an abundant number, since it is smaller than the sum of its proper divisors (75692538).

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

64720098 is a wasteful number, since it uses less digits than its factorization.

64720098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770 (or 4767 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 64720098 is about 8044.8802352801. The cubic root of 64720098 is about 401.4946125443.

The spelling of 64720098 in words is "sixty-four million, seven hundred twenty thousand, ninety-eight".