698443864 has 16 divisors (see below), whose sum is σ = 1319005800. Its totient is φ = 346708992.

The previous prime is 698443849. The next prime is 698443871. The reversal of 698443864 is 468344896.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312937 + ... + 315160.

Almost surely, 2^698443864 is an apocalyptic number.

It is an amenable number.

698443864 is a deficient number, since it is larger than the sum of its proper divisors (620561936).

698443864 is a wasteful number, since it uses less digits than its factorization.

698443864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628242 (or 628238 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 52.

The square root of 698443864 is about 26428.0885423066. The cubic root of 698443864 is about 887.2455614993.

The spelling of 698443864 in words is "six hundred ninety-eight million, four hundred forty-three thousand, eight hundred sixty-four".