715621005 has 24 divisors (see below), whose sum is σ = 1353175200. Its totient is φ = 346967520.

The previous prime is 715621003. The next prime is 715621009. The reversal of 715621005 is 500126517.

It is not a de Polignac number, because 715621005 - 2¹ = 715621003 is a prime.

It is a super-2 number, since 2×715621005² = 1024226845594420050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 715621005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715621003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 722355 + ... + 723344.

It is an arithmetic number, because the mean of its divisors is an integer number (56382300).

Almost surely, 2^715621005 is an apocalyptic number.

It is an amenable number.

715621005 is a deficient number, since it is larger than the sum of its proper divisors (637554195).

715621005 is a wasteful number, since it uses less digits than its factorization.

715621005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445721 (or 1445718 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 715621005 is about 26751.0935290504. The cubic root of 715621005 is about 894.4602115309.

The spelling of 715621005 in words is "seven hundred fifteen million, six hundred twenty-one thousand, five".