64431194 has 8 divisors (see below), whose sum is σ = 97732980. Its totient is φ = 31853536.

The previous prime is 64431181. The next prime is 64431197. The reversal of 64431194 is 49113446.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64240225 + 190969 = 8015^2 + 437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 64431194.

It is not an unprimeable number, because it can be changed into a prime (64431197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180809 + ... + 181164.

Almost surely, 2^64431194 is an apocalyptic number.

64431194 is a deficient number, since it is larger than the sum of its proper divisors (33301786).

64431194 is a wasteful number, since it uses less digits than its factorization.

64431194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362064.

The product of its digits is 10368, while the sum is 32.

The square root of 64431194 is about 8026.9043846305. The cubic root of 64431194 is about 400.8963109001.

The spelling of 64431194 in words is "sixty-four million, four hundred thirty-one thousand, one hundred ninety-four".