911687994 has 64 divisors (see below), whose sum is σ = 2321452800. Its totient is φ = 259801344.

The previous prime is 911687989. The next prime is 911688017. The reversal of 911687994 is 499786119.

911687994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 911687994.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151654 + ... + 157550.

It is an arithmetic number, because the mean of its divisors is an integer number (36272700).

Almost surely, 2^911687994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 911687994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160726400).

911687994 is an abundant number, since it is smaller than the sum of its proper divisors (1409764806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

911687994 is a wasteful number, since it uses less digits than its factorization.

911687994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6324 (or 6318 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 911687994 is about 30194.1715236567. The cubic root of 911687994 is about 969.6509155880.

The spelling of 911687994 in words is "nine hundred eleven million, six hundred eighty-seven thousand, nine hundred ninety-four".