64400462 has 32 divisors (see below), whose sum is σ = 116812800. Its totient is φ = 26012448.

The previous prime is 64400449. The next prime is 64400473. The reversal of 64400462 is 26400446.

It is a super-3 number, since 3×64400462³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

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, 63068 + ... + 64080.

It is an arithmetic number, because the mean of its divisors is an integer number (3650400).

Almost surely, 2^64400462 is an apocalyptic number.

64400462 is a deficient number, since it is larger than the sum of its proper divisors (52412338).

64400462 is a wasteful number, since it uses less digits than its factorization.

64400462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 64400462 is about 8024.9898442303. The cubic root of 64400462 is about 400.8325617334.

The spelling of 64400462 in words is "sixty-four million, four hundred thousand, four hundred sixty-two".