698137920 has 112 divisors (see below), whose sum is σ = 2462905920. Its totient is φ = 186167808.

The previous prime is 698137877. The next prime is 698137927. The reversal of 698137920 is 29731896.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698137927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31762 + ... + 49041.

Almost surely, 2^698137920 is an apocalyptic number.

698137920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

698137920 is an abundant number, since it is smaller than the sum of its proper divisors (1764768000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698137920 is a wasteful number, since it uses less digits than its factorization.

698137920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80829 (or 80813 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 698137920 is about 26422.2996728142. The cubic root of 698137920 is about 887.1159938922.

The spelling of 698137920 in words is "six hundred ninety-eight million, one hundred thirty-seven thousand, nine hundred twenty".