698238431 has 8 divisors (see below), whose sum is σ = 762587904. Its totient is φ = 634034520.

The previous prime is 698238427. The next prime is 698238449. The reversal of 698238431 is 134832896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 698238431 - 2² = 698238427 is a prime.

It is a super-2 number, since 2×698238431² = 975073813050683522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698238421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26231 + ... + 45656.

It is an arithmetic number, because the mean of its divisors is an integer number (95323488).

Almost surely, 2^698238431 is an apocalyptic number.

698238431 is a deficient number, since it is larger than the sum of its proper divisors (64349473).

698238431 is a wasteful number, since it uses less digits than its factorization.

698238431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72781.

The product of its digits is 248832, while the sum is 44.

The square root of 698238431 is about 26424.2016151860. The cubic root of 698238431 is about 887.1585645813.

The spelling of 698238431 in words is "six hundred ninety-eight million, two hundred thirty-eight thousand, four hundred thirty-one".