698013839 has 4 divisors (see below), whose sum is σ = 708432024. Its totient is φ = 687595656.

The previous prime is 698013817. The next prime is 698013853. The reversal of 698013839 is 938310896.

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

It is a cyclic number.

It is not a de Polignac number, because 698013839 - 2²⁴ = 681236623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 698013793 and 698013802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698013139) 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, 5208992 + ... + 5209125.

It is an arithmetic number, because the mean of its divisors is an integer number (177108006).

Almost surely, 2^698013839 is an apocalyptic number.

698013839 is a deficient number, since it is larger than the sum of its proper divisors (10418185).

698013839 is a wasteful number, since it uses less digits than its factorization.

698013839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10418184.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 698013839 is about 26419.9515328851. The cubic root of 698013839 is about 887.0634346685.

The spelling of 698013839 in words is "six hundred ninety-eight million, thirteen thousand, eight hundred thirty-nine".