616436730 has 160 divisors (see below), whose sum is σ = 2040280704. Its totient is φ = 130045824.

The previous prime is 616436729. The next prime is 616436749. The reversal of 616436730 is 37634616.

It is a happy number.

616436730 is a `hidden beast` number, since 6 + 1 + 643 + 6 + 7 + 3 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 69529 + ... + 77891.

Almost surely, 2^616436730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616436730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020140352).

616436730 is an abundant number, since it is smaller than the sum of its proper divisors (1423843974).

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

616436730 is a wasteful number, since it uses less digits than its factorization.

616436730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402 (or 8393 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 616436730 is about 24828.1439096844. The cubic root of 616436730 is about 851.0652066413.

The spelling of 616436730 in words is "six hundred sixteen million, four hundred thirty-six thousand, seven hundred thirty".