655347906 has 12 divisors (see below), whose sum is σ = 1419920502. Its totient is φ = 218449296.

The previous prime is 655347899. The next prime is 655347961. The reversal of 655347906 is 609743556.

655347906 is a `hidden beast` number, since 6 + 553 + 4 + 7 + 90 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 643383225 + 11964681 = 25365^2 + 3459^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18204091 + ... + 18204126.

Almost surely, 2^655347906 is an apocalyptic number.

655347906 is an abundant number, since it is smaller than the sum of its proper divisors (764572596).

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

655347906 is a wasteful number, since it uses less digits than its factorization.

655347906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36408225 (or 36408222 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The square root of 655347906 is about 25599.7637879727. The cubic root of 655347906 is about 868.6082941514.

The spelling of 655347906 in words is "six hundred fifty-five million, three hundred forty-seven thousand, nine hundred six".