956198661 has 8 divisors (see below), whose sum is σ = 1390834464. Its totient is φ = 579514320.

The previous prime is 956198651. The next prime is 956198669. The reversal of 956198661 is 166891659.

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

It is not a de Polignac number, because 956198661 - 2²³ = 947810053 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (956198669) 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, 14487826 + ... + 14487891.

It is an arithmetic number, because the mean of its divisors is an integer number (173854308).

Almost surely, 2^956198661 is an apocalyptic number.

It is an amenable number.

956198661 is a deficient number, since it is larger than the sum of its proper divisors (434635803).

956198661 is a wasteful number, since it uses less digits than its factorization.

956198661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28975731.

The product of its digits is 699840, while the sum is 51.

The square root of 956198661 is about 30922.4620785603. The cubic root of 956198661 is about 985.1810367513.

The spelling of 956198661 in words is "nine hundred fifty-six million, one hundred ninety-eight thousand, six hundred sixty-one".