698434863 has 16 divisors (see below), whose sum is σ = 1074617856. Its totient is φ = 395229600.

The previous prime is 698434819. The next prime is 698434883. The reversal of 698434863 is 368434896.

It is a happy number.

It is not a de Polignac number, because 698434863 - 2⁹ = 698434351 is a prime.

It is a super-2 number, since 2×698434863² = 975622515707657538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698434883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159288 + ... + 163613.

It is an arithmetic number, because the mean of its divisors is an integer number (67163616).

Almost surely, 2^698434863 is an apocalyptic number.

698434863 is a deficient number, since it is larger than the sum of its proper divisors (376182993).

698434863 is a wasteful number, since it uses less digits than its factorization.

698434863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323014.

The product of its digits is 2985984, while the sum is 51.

The square root of 698434863 is about 26427.9182494573. The cubic root of 698434863 is about 887.2417501066.

The spelling of 698434863 in words is "six hundred ninety-eight million, four hundred thirty-four thousand, eight hundred sixty-three".