64477274 has 4 divisors (see below), whose sum is σ = 96715914. Its totient is φ = 32238636.

The previous prime is 64477271. The next prime is 64477291. The reversal of 64477274 is 47277446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48930025 + 15547249 = 6995^2 + 3943^2 .

It is not an unprimeable number, because it can be changed into a prime (64477271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16119317 + ... + 16119320.

Almost surely, 2^64477274 is an apocalyptic number.

64477274 is a deficient number, since it is larger than the sum of its proper divisors (32238640).

64477274 is a wasteful number, since it uses less digits than its factorization.

64477274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32238639.

The product of its digits is 263424, while the sum is 41.

The square root of 64477274 is about 8029.7742184946. The cubic root of 64477274 is about 400.9918593381.

The spelling of 64477274 in words is "sixty-four million, four hundred seventy-seven thousand, two hundred seventy-four".