613609768 has 8 divisors (see below), whose sum is σ = 1150518330. Its totient is φ = 306804880.

The previous prime is 613609757. The next prime is 613609783. The reversal of 613609768 is 867906316.

It can be written as a sum of positive squares in only one way, i.e., 577825444 + 35784324 = 24038^2 + 5982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38350603 + ... + 38350618.

Almost surely, 2^613609768 is an apocalyptic number.

It is an amenable number.

613609768 is a deficient number, since it is larger than the sum of its proper divisors (536908562).

613609768 is a wasteful number, since it uses less digits than its factorization.

613609768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76701227 (or 76701223 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 613609768 is about 24771.1478942741. The cubic root of 613609768 is about 849.7622255340.

The spelling of 613609768 in words is "six hundred thirteen million, six hundred nine thousand, seven hundred sixty-eight".