698020731 has 12 divisors (see below), whose sum is σ = 1067561352. Its totient is φ = 437973696.

The previous prime is 698020723. The next prime is 698020733. The reversal of 698020731 is 137020896.

It is not a de Polignac number, because 698020731 - 2³ = 698020723 is a prime.

It is a super-2 number, since 2×698020731² = 974465881811548722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (698020733) 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 11 ways as a sum of consecutive naturals, for example, 2280961 + ... + 2281266.

It is an arithmetic number, because the mean of its divisors is an integer number (88963446).

Almost surely, 2^698020731 is an apocalyptic number.

698020731 is a deficient number, since it is larger than the sum of its proper divisors (369540621).

698020731 is a wasteful number, since it uses less digits than its factorization.

698020731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562250 (or 4562247 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 698020731 is about 26420.0819642938. The cubic root of 698020731 is about 887.0663542004.

The spelling of 698020731 in words is "six hundred ninety-eight million, twenty thousand, seven hundred thirty-one".