715985556 has 144 divisors (see below), whose sum is σ = 2005776192. Its totient is φ = 197429760.

The previous prime is 715985551. The next prime is 715985563. The reversal of 715985556 is 655589517.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 715985499 and 715985508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715985551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1566480 + ... + 1566936.

Almost surely, 2^715985556 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 715985556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002888096).

715985556 is an abundant number, since it is smaller than the sum of its proper divisors (1289790636).

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

715985556 is a wasteful number, since it uses less digits than its factorization.

715985556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 569 counting only the distinct ones).

The product of its digits is 1890000, while the sum is 51.

The square root of 715985556 is about 26757.9064203461. The cubic root of 715985556 is about 894.6120707823.

It can be divided in two parts, 71598555 and 6, that added together give a triangular number (71598561 = T₁₁₉₆₆).

The spelling of 715985556 in words is "seven hundred fifteen million, nine hundred eighty-five thousand, five hundred fifty-six".