64400230 has 16 divisors (see below), whose sum is σ = 120960864. Its totient is φ = 24640000.

The previous prime is 64400227. The next prime is 64400243. The reversal of 64400230 is 3200446.

It is a junction number, because it is equal to n+sod(n) for n = 64400198 and 64400207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139771 + ... + 140230.

It is an arithmetic number, because the mean of its divisors is an integer number (7560054).

Almost surely, 2^64400230 is an apocalyptic number.

64400230 is a deficient number, since it is larger than the sum of its proper divisors (56560634).

64400230 is a wasteful number, since it uses less digits than its factorization.

64400230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280031.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 64400230 is about 8024.9753893704. The cubic root of 64400230 is about 400.8320804053.

Adding to 64400230 its reverse (3200446), we get a palindrome (67600676).

The spelling of 64400230 in words is "sixty-four million, four hundred thousand, two hundred thirty".