613216755 has 24 divisors (see below), whose sum is σ = 1085527872. Its totient is φ = 320089344.

The previous prime is 613216739. The next prime is 613216757. The reversal of 613216755 is 557612316.

It is not a de Polignac number, because 613216755 - 2⁴ = 613216739 is a prime.

It is a super-2 number, since 2×613216755² = 752069577225460050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (613216757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142854 + ... + 147083.

It is an arithmetic number, because the mean of its divisors is an integer number (45230328).

Almost surely, 2^613216755 is an apocalyptic number.

613216755 is a deficient number, since it is larger than the sum of its proper divisors (472311117).

613216755 is a wasteful number, since it uses less digits than its factorization.

613216755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289995 (or 289992 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 613216755 is about 24763.2137453926. The cubic root of 613216755 is about 849.5807644243.

The spelling of 613216755 in words is "six hundred thirteen million, two hundred sixteen thousand, seven hundred fifty-five".