64456394 has 12 divisors (see below), whose sum is σ = 97361586. Its totient is φ = 32004072.

The previous prime is 64456393. The next prime is 64456433. The reversal of 64456394 is 49365446.

It can be written as a sum of positive squares in only one way, i.e., 63792169 + 664225 = 7987^2 + 815^2 .

It is not an unprimeable number, because it can be changed into a prime (64456393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52532 + ... + 53744.

Almost surely, 2^64456394 is an apocalyptic number.

64456394 is a deficient number, since it is larger than the sum of its proper divisors (32905192).

64456394 is a wasteful number, since it uses less digits than its factorization.

64456394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541 (or 1378 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

The square root of 64456394 is about 8028.4739521281. The cubic root of 64456394 is about 400.9485695945.

The spelling of 64456394 in words is "sixty-four million, four hundred fifty-six thousand, three hundred ninety-four".