613404738 has 20 divisors (see below), whose sum is σ = 1374481350. Its totient is φ = 204468192.

The previous prime is 613404709. The next prime is 613404751. The reversal of 613404738 is 837404316.

613404738 is a `hidden beast` number, since 613 + 4 + 0 + 4 + 7 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 471628089 + 141776649 = 21717^2 + 11907^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1893063 + ... + 1893386.

Almost surely, 2^613404738 is an apocalyptic number.

613404738 is an abundant number, since it is smaller than the sum of its proper divisors (761076612).

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

613404738 is a wasteful number, since it uses less digits than its factorization.

613404738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786463 (or 3786454 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 613404738 is about 24767.0090644793. The cubic root of 613404738 is about 849.6675691975.

The spelling of 613404738 in words is "six hundred thirteen million, four hundred four thousand, seven hundred thirty-eight".