613677640 has 32 divisors (see below), whose sum is σ = 1385242560. Its totient is φ = 244676800.

The previous prime is 613677587. The next prime is 613677653. The reversal of 613677640 is 46776316.

It is a super-3 number, since 3×613677640³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 613677593 and 613677602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12226 + ... + 37105.

It is an arithmetic number, because the mean of its divisors is an integer number (43288830).

Almost surely, 2^613677640 is an apocalyptic number.

It is an amenable number.

613677640 is an abundant number, since it is smaller than the sum of its proper divisors (771564920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613677640 is a wasteful number, since it uses less digits than its factorization.

613677640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49653 (or 49649 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 613677640 is about 24772.5178373132. The cubic root of 613677640 is about 849.7935554000.

The spelling of 613677640 in words is "six hundred thirteen million, six hundred seventy-seven thousand, six hundred forty".