662721474 has 16 divisors (see below), whose sum is σ = 1327091040. Its totient is φ = 220632480.

The previous prime is 662721457. The next prime is 662721481. The reversal of 662721474 is 474127266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63412 + ... + 73119.

It is an arithmetic number, because the mean of its divisors is an integer number (82943190).

Almost surely, 2^662721474 is an apocalyptic number.

662721474 is an abundant number, since it is smaller than the sum of its proper divisors (664369566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662721474 is a wasteful number, since it uses less digits than its factorization.

662721474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137345.

The product of its digits is 112896, while the sum is 39.

The square root of 662721474 is about 25743.3772842648. The cubic root of 662721474 is about 871.8538326743.

The spelling of 662721474 in words is "six hundred sixty-two million, seven hundred twenty-one thousand, four hundred seventy-four".