961128686 has 32 divisors (see below), whose sum is σ = 1662612480. Its totient is φ = 408189600.

The previous prime is 961128667. The next prime is 961128689. The reversal of 961128686 is 686821169.

It is a self number, because there is not a number n which added to its sum of digits gives 961128686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961128689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054571 + ... + 1055481.

It is an arithmetic number, because the mean of its divisors is an integer number (51956640).

Almost surely, 2^961128686 is an apocalyptic number.

961128686 is a deficient number, since it is larger than the sum of its proper divisors (701483794).

961128686 is a wasteful number, since it uses less digits than its factorization.

961128686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520.

The product of its digits is 248832, while the sum is 47.

The square root of 961128686 is about 31002.0755111654. The cubic root of 961128686 is about 986.8712865176.

The spelling of 961128686 in words is "nine hundred sixty-one million, one hundred twenty-eight thousand, six hundred eighty-six".