613017913 has 4 divisors (see below), whose sum is σ = 615297060. Its totient is φ = 610738768.

The previous prime is 613017893. The next prime is 613017917. The reversal of 613017913 is 319710316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33315984 + 579701929 = 5772^2 + 24077^2 .

It is a cyclic number.

It is not a de Polignac number, because 613017913 - 2⁹ = 613017401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613017917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1139170 + ... + 1139707.

It is an arithmetic number, because the mean of its divisors is an integer number (153824265).

Almost surely, 2^613017913 is an apocalyptic number.

It is an amenable number.

613017913 is a deficient number, since it is larger than the sum of its proper divisors (2279147).

613017913 is a wasteful number, since it uses less digits than its factorization.

613017913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279146.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 613017913 is about 24759.1985532650. The cubic root of 613017913 is about 849.4889259894.

The spelling of 613017913 in words is "six hundred thirteen million, seventeen thousand, nine hundred thirteen".