715735661 has 8 divisors (see below), whose sum is σ = 723896448. Its totient is φ = 707616000.

The previous prime is 715735639. The next prime is 715735679. The reversal of 715735661 is 166537517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 715735661 - 2¹⁰ = 715734637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715735061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25421 + ... + 45581.

It is an arithmetic number, because the mean of its divisors is an integer number (90487056).

Almost surely, 2^715735661 is an apocalyptic number.

It is an amenable number.

715735661 is a deficient number, since it is larger than the sum of its proper divisors (8160787).

715735661 is a wasteful number, since it uses less digits than its factorization.

715735661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20563.

The product of its digits is 132300, while the sum is 41.

The square root of 715735661 is about 26753.2364584175. The cubic root of 715735661 is about 894.5079787860.

The spelling of 715735661 in words is "seven hundred fifteen million, seven hundred thirty-five thousand, six hundred sixty-one".