400698 has 24 divisors (see below), whose sum is σ = 880308. Its totient is φ = 131712.

The previous prime is 400681. The next prime is 400703. The reversal of 400698 is 896004.

It can be written as a sum of positive squares in 2 ways, for example, as 400689 + 9 = 633^2 + 3^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 400698.

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, 1936 + ... + 2132.

2⁴⁰⁰⁶⁹⁸ is an apocalyptic number.

400698 is an abundant number, since it is smaller than the sum of its proper divisors (479610).

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

400698 is a wasteful number, since it uses less digits than its factorization.

400698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 400698 is about 633.0071089648. The cubic root of 400698 is about 73.7234626346.

The spelling of 400698 in words is "four hundred thousand, six hundred ninety-eight".