698397426 has 24 divisors (see below), whose sum is σ = 1528180524. Its totient is φ = 230493600.

The previous prime is 698397409. The next prime is 698397431. The reversal of 698397426 is 624793896.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 678550401 + 19847025 = 26049^2 + 4455^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190261 + ... + 193896.

Almost surely, 2^698397426 is an apocalyptic number.

698397426 is an abundant number, since it is smaller than the sum of its proper divisors (829783098).

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

698397426 is a wasteful number, since it uses less digits than its factorization.

698397426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384266 (or 384263 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 698397426 is about 26427.2099548931. The cubic root of 698397426 is about 887.2258973933.

The spelling of 698397426 in words is "six hundred ninety-eight million, three hundred ninety-seven thousand, four hundred twenty-six".