698090401 has 4 divisors (see below), whose sum is σ = 711261972. Its totient is φ = 684918832.

The previous prime is 698090377. The next prime is 698090417. The reversal of 698090401 is 104090896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 251190801 + 446899600 = 15849^2 + 21140^2 .

It is a cyclic number.

It is not a de Polignac number, because 698090401 - 2²⁵ = 664535969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698090441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6585706 + ... + 6585811.

It is an arithmetic number, because the mean of its divisors is an integer number (177815493).

Almost surely, 2^698090401 is an apocalyptic number.

It is an amenable number.

698090401 is a deficient number, since it is larger than the sum of its proper divisors (13171571).

698090401 is a wasteful number, since it uses less digits than its factorization.

698090401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13171570.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 698090401 is about 26421.4004360102. The cubic root of 698090401 is about 887.0958661495.

The spelling of 698090401 in words is "six hundred ninety-eight million, ninety thousand, four hundred one".