613600657 has 4 divisors (see below), whose sum is σ = 620993520. Its totient is φ = 606207796.

The previous prime is 613600643. The next prime is 613600661. The reversal of 613600657 is 756006316.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 613600657 - 2⁷ = 613600529 is a prime.

It is a super-4 number, since 4×613600657⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613600157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3696307 + ... + 3696472.

It is an arithmetic number, because the mean of its divisors is an integer number (155248380).

Almost surely, 2^613600657 is an apocalyptic number.

It is an amenable number.

613600657 is a deficient number, since it is larger than the sum of its proper divisors (7392863).

613600657 is an equidigital number, since it uses as much as digits as its factorization.

613600657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7392862.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 613600657 is about 24770.9639901236. The cubic root of 613600657 is about 849.7580197002.

The spelling of 613600657 in words is "six hundred thirteen million, six hundred thousand, six hundred fifty-seven".