662746240 has 64 divisors (see below), whose sum is σ = 1706274360. Its totient is φ = 244703232.

The previous prime is 662746177. The next prime is 662746267. The reversal of 662746240 is 42647266.

It can be written as a sum of positive squares in 4 ways, for example, as 523128384 + 139617856 = 22872^2 + 11816^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 662746240.

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, 31509 + ... + 48148.

Almost surely, 2^662746240 is an apocalyptic number.

It is an amenable number.

662746240 is an abundant number, since it is smaller than the sum of its proper divisors (1043528120).

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

662746240 is a wasteful number, since it uses less digits than its factorization.

662746240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79689 (or 79677 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 662746240 is about 25743.8582966889. The cubic root of 662746240 is about 871.8646929748.

The spelling of 662746240 in words is "six hundred sixty-two million, seven hundred forty-six thousand, two hundred forty".