64970000398 has 16 divisors (see below), whose sum is σ = 103855841280. Its totient is φ = 30411488536.

The previous prime is 64970000383. The next prime is 64970000399. The reversal of 64970000398 is 89300007946.

It is a super-2 number, since 2×64970000398² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64970000399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15023278 + ... + 15027601.

It is an arithmetic number, because the mean of its divisors is an integer number (6490990080).

Almost surely, 2^64970000398 is an apocalyptic number.

64970000398 is a deficient number, since it is larger than the sum of its proper divisors (38885840882).

64970000398 is a wasteful number, since it uses less digits than its factorization.

64970000398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30050951.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 64970000398 in words is "sixty-four billion, nine hundred seventy million, three hundred ninety-eight", and thus it is an aban number.