913679861 has 8 divisors (see below), whose sum is σ = 916529880. Its totient is φ = 910835712.

The previous prime is 913679857. The next prime is 913679873. The reversal of 913679861 is 168976319.

It can be written as a sum of positive squares in 4 ways, for example, as 2002225 + 911677636 = 1415^2 + 30194^2 .

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 913679861 - 2² = 913679857 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 (913679831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791861 + ... + 793013.

It is an arithmetic number, because the mean of its divisors is an integer number (114566235).

Almost surely, 2^913679861 is an apocalyptic number.

It is an amenable number.

913679861 is a deficient number, since it is larger than the sum of its proper divisors (2850019).

913679861 is a wasteful number, since it uses less digits than its factorization.

913679861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935.

The product of its digits is 489888, while the sum is 50.

The square root of 913679861 is about 30227.1378234857. The cubic root of 913679861 is about 970.3565702945.

The spelling of 913679861 in words is "nine hundred thirteen million, six hundred seventy-nine thousand, eight hundred sixty-one".