613597648 has 10 divisors (see below), whose sum is σ = 1188845474. Its totient is φ = 306798816.

The previous prime is 613597639. The next prime is 613597679. The reversal of 613597648 is 846795316.

It can be written as a sum of positive squares in only one way, i.e., 601819024 + 11778624 = 24532^2 + 3432^2 .

It is a super-2 number, since 2×613597648² = 753004147262263808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19174911 + ... + 19174942.

Almost surely, 2^613597648 is an apocalyptic number.

It is an amenable number.

613597648 is a deficient number, since it is larger than the sum of its proper divisors (575247826).

613597648 is a wasteful number, since it uses less digits than its factorization.

613597648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38349861 (or 38349855 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 613597648 is about 24770.9032536159. The cubic root of 613597648 is about 849.7566306719.

The spelling of 613597648 in words is "six hundred thirteen million, five hundred ninety-seven thousand, six hundred forty-eight".