694880091 has 12 divisors (see below), whose sum is σ = 1030843632. Its totient is φ = 450732816.

The previous prime is 694880089. The next prime is 694880099. The reversal of 694880091 is 190088496.

It is not a de Polignac number, because 694880091 - 2¹ = 694880089 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (694880099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1043031 + ... + 1043696.

It is an arithmetic number, because the mean of its divisors is an integer number (85903636).

Almost surely, 2^694880091 is an apocalyptic number.

694880091 is a deficient number, since it is larger than the sum of its proper divisors (335963541).

694880091 is a wasteful number, since it uses less digits than its factorization.

694880091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086770 (or 2086767 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 694880091 is about 26360.5783510150. The cubic root of 694880091 is about 885.7339463613.

The spelling of 694880091 in words is "six hundred ninety-four million, eight hundred eighty thousand, ninety-one".