698734791 has 12 divisors (see below), whose sum is σ = 1016546440. Its totient is φ = 462471120.

The previous prime is 698734739. The next prime is 698734811. The reversal of 698734791 is 197437896.

It is a happy number.

It is not a de Polignac number, because 698734791 - 2⁹ = 698734279 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 (698734591) 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, 278020 + ... + 280521.

Almost surely, 2^698734791 is an apocalyptic number.

698734791 is a deficient number, since it is larger than the sum of its proper divisors (317811649).

698734791 is a wasteful number, since it uses less digits than its factorization.

698734791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558686 (or 558683 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 698734791 is about 26433.5920941517. The cubic root of 698734791 is about 887.3687342990.

The spelling of 698734791 in words is "six hundred ninety-eight million, seven hundred thirty-four thousand, seven hundred ninety-one".