64436474 has 8 divisors (see below), whose sum is σ = 96751380. Its totient is φ = 32186016.

The previous prime is 64436459. The next prime is 64436479. The reversal of 64436474 is 47463446.

It can be written as a sum of positive squares in 2 ways, for example, as 64240225 + 196249 = 8015^2 + 443^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64436479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13529 + ... + 17660.

Almost surely, 2^64436474 is an apocalyptic number.

64436474 is a deficient number, since it is larger than the sum of its proper divisors (32314906).

64436474 is a wasteful number, since it uses less digits than its factorization.

64436474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32224.

The product of its digits is 193536, while the sum is 38.

The square root of 64436474 is about 8027.2332718067. The cubic root of 64436474 is about 400.9072614691.

The spelling of 64436474 in words is "sixty-four million, four hundred thirty-six thousand, four hundred seventy-four".