698082921 has 8 divisors (see below), whose sum is σ = 1034196960. Its totient is φ = 465388596.

The previous prime is 698082919. The next prime is 698082923. The reversal of 698082921 is 129280896.

It is an interprime number because it is at equal distance from previous prime (698082919) and next prime (698082923).

It is not a de Polignac number, because 698082921 - 2¹ = 698082919 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (698082923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12927435 + ... + 12927488.

It is an arithmetic number, because the mean of its divisors is an integer number (129274620).

Almost surely, 2^698082921 is an apocalyptic number.

It is an amenable number.

698082921 is a deficient number, since it is larger than the sum of its proper divisors (336114039).

698082921 is a wasteful number, since it uses less digits than its factorization.

698082921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25854932 (or 25854926 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 698082921 is about 26421.2588837095. The cubic root of 698082921 is about 887.0926977438.

The spelling of 698082921 in words is "six hundred ninety-eight million, eighty-two thousand, nine hundred twenty-one".