64420474 has 8 divisors (see below), whose sum is σ = 96664788. Its totient is φ = 32198880.

The previous prime is 64420451. The next prime is 64420481. The reversal of 64420474 is 47402446.

It can be written as a sum of positive squares in 2 ways, for example, as 46144849 + 18275625 = 6793^2 + 4275^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8014 + ... + 13894.

Almost surely, 2^64420474 is an apocalyptic number.

64420474 is a deficient number, since it is larger than the sum of its proper divisors (32244314).

64420474 is a wasteful number, since it uses less digits than its factorization.

64420474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11360.

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 64420474 is about 8026.2366025429. The cubic root of 64420474 is about 400.8740760862.

The spelling of 64420474 in words is "sixty-four million, four hundred twenty thousand, four hundred seventy-four".