698611431 has 16 divisors (see below), whose sum is σ = 1087202304. Its totient is φ = 390712224.

The previous prime is 698611367. The next prime is 698611489. The reversal of 698611431 is 134116896.

It is not a de Polignac number, because 698611431 - 2⁶ = 698611367 is a prime.

It is a super-2 number, since 2×698611431² = 976115863047735522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 698611431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698611231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352920 + ... + 354893.

It is an arithmetic number, because the mean of its divisors is an integer number (67950144).

Almost surely, 2^698611431 is an apocalyptic number.

698611431 is a deficient number, since it is larger than the sum of its proper divisors (388590873).

698611431 is a wasteful number, since it uses less digits than its factorization.

698611431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707870.

The product of its digits is 31104, while the sum is 39.

The square root of 698611431 is about 26431.2585965935. The cubic root of 698611431 is about 887.3165102644.

The spelling of 698611431 in words is "six hundred ninety-eight million, six hundred eleven thousand, four hundred thirty-one".