6662509456 has 20 divisors (see below), whose sum is σ = 12910746204. Its totient is φ = 3330704000.

The previous prime is 6662509421. The next prime is 6662509489. The reversal of 6662509456 is 6549052666.

It can be written as a sum of positive squares in 2 ways, for example, as 4366566400 + 2295943056 = 66080^2 + 47916^2 .

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, 76146 + ... + 138286.

Almost surely, 2^6662509456 is an apocalyptic number.

It is an amenable number.

6662509456 is a deficient number, since it is larger than the sum of its proper divisors (6248236748).

6662509456 is a wasteful number, since it uses less digits than its factorization.

6662509456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68850 (or 68844 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 49.

The square root of 6662509456 is about 81624.1965105936. The cubic root of 6662509456 is about 1881.6807679154.

The spelling of 6662509456 in words is "six billion, six hundred sixty-two million, five hundred nine thousand, four hundred fifty-six".