613649736 has 192 divisors, whose sum is σ = 2037772800. Its totient is φ = 170481024.

The previous prime is 613649711. The next prime is 613649759. The reversal of 613649736 is 637946316.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 613649691 and 613649700.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 390825 + ... + 392391.

It is an arithmetic number, because the mean of its divisors is an integer number (10613400).

Almost surely, 2^613649736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613649736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018886400).

613649736 is an abundant number, since it is smaller than the sum of its proper divisors (1424123064).

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

613649736 is a wasteful number, since it uses less digits than its factorization.

613649736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1616 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 613649736 is about 24771.9546261493. The cubic root of 613649736 is about 849.7806751312.

The spelling of 613649736 in words is "six hundred thirteen million, six hundred forty-nine thousand, seven hundred thirty-six".