698437940 has 12 divisors (see below), whose sum is σ = 1466719716. Its totient is φ = 279375168.

The previous prime is 698437933. The next prime is 698437963. The reversal of 698437940 is 49734896.

It can be written as a sum of positive squares in 2 ways, for example, as 312158224 + 386279716 = 17668^2 + 19654^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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, 17460929 + ... + 17460968.

It is an arithmetic number, because the mean of its divisors is an integer number (122226643).

Almost surely, 2^698437940 is an apocalyptic number.

It is an amenable number.

698437940 is an abundant number, since it is smaller than the sum of its proper divisors (768281776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698437940 is a wasteful number, since it uses less digits than its factorization.

698437940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34921906 (or 34921904 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 698437940 is about 26427.9764643455. The cubic root of 698437940 is about 887.2430530383.

The spelling of 698437940 in words is "six hundred ninety-eight million, four hundred thirty-seven thousand, nine hundred forty".