691000994 has 16 divisors (see below), whose sum is σ = 1049046336. Its totient is φ = 341334000.

The previous prime is 691000993. The next prime is 691001021. The reversal of 691000994 is 499000196.

It is not an unprimeable number, because it can be changed into a prime (691000993) 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, 95699 + ... + 102665.

It is an arithmetic number, because the mean of its divisors is an integer number (65565396).

Almost surely, 2^691000994 is an apocalyptic number.

691000994 is a deficient number, since it is larger than the sum of its proper divisors (358045342).

691000994 is a wasteful number, since it uses less digits than its factorization.

691000994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 691000994 is about 26286.8977629541. The cubic root of 691000994 is about 884.0826968560.

The spelling of 691000994 in words is "six hundred ninety-one million, nine hundred ninety-four", and thus it is an aban number.