661076713 has 8 divisors (see below), whose sum is σ = 721432800. Its totient is φ = 600763680.

The previous prime is 661076701. The next prime is 661076719. The reversal of 661076713 is 317670166.

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

It is not a de Polignac number, because 661076713 - 2⁹ = 661076201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (661076719) 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, 27181 + ... + 45397.

It is an arithmetic number, because the mean of its divisors is an integer number (90179100).

Almost surely, 2^661076713 is an apocalyptic number.

It is an amenable number.

661076713 is a deficient number, since it is larger than the sum of its proper divisors (60356087).

661076713 is a wasteful number, since it uses less digits than its factorization.

661076713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21527.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 661076713 is about 25711.4121160235. The cubic root of 661076713 is about 871.1319712875.

The spelling of 661076713 in words is "six hundred sixty-one million, seventy-six thousand, seven hundred thirteen".