64351398 has 16 divisors (see below), whose sum is σ = 130466736. Its totient is φ = 21156480.

The previous prime is 64351393. The next prime is 64351433. The reversal of 64351398 is 89315346.

It is a super-2 number, since 2×64351398² = 8282204849108808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64351393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73023 + ... + 73898.

It is an arithmetic number, because the mean of its divisors is an integer number (8154171).

Almost surely, 2^64351398 is an apocalyptic number.

64351398 is an abundant number, since it is smaller than the sum of its proper divisors (66115338).

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

64351398 is a wasteful number, since it uses less digits than its factorization.

64351398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146999.

The product of its digits is 77760, while the sum is 39.

The square root of 64351398 is about 8021.9323108588. The cubic root of 64351398 is about 400.7307433890.

The spelling of 64351398 in words is "sixty-four million, three hundred fifty-one thousand, three hundred ninety-eight".