64724474 has 8 divisors (see below), whose sum is σ = 102797748. Its totient is φ = 30458560.

The previous prime is 64724447. The next prime is 64724509. The reversal of 64724474 is 47442746.

It can be written as a sum of positive squares in 2 ways, for example, as 61858225 + 2866249 = 7865^2 + 1693^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951797 + ... + 951864.

Almost surely, 2^64724474 is an apocalyptic number.

64724474 is a deficient number, since it is larger than the sum of its proper divisors (38073274).

64724474 is a wasteful number, since it uses less digits than its factorization.

64724474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903680.

The product of its digits is 150528, while the sum is 38.

The square root of 64724474 is about 8045.1522048995. The cubic root of 64724474 is about 401.5036612575.

The spelling of 64724474 in words is "sixty-four million, seven hundred twenty-four thousand, four hundred seventy-four".