698765997 has 4 divisors (see below), whose sum is σ = 931688000. Its totient is φ = 465843996.

The previous prime is 698765989. The next prime is 698766007. The reversal of 698765997 is 799567896.

698765997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 698765997 - 2³ = 698765989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698765917) 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, 116460997 + ... + 116461002.

It is an arithmetic number, because the mean of its divisors is an integer number (232922000).

Almost surely, 2^698765997 is an apocalyptic number.

It is an amenable number.

698765997 is a deficient number, since it is larger than the sum of its proper divisors (232922003).

698765997 is a wasteful number, since it uses less digits than its factorization.

698765997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232922002.

The product of its digits is 51438240, while the sum is 66.

The square root of 698765997 is about 26434.1823592106. The cubic root of 698765997 is about 887.3819442783.

The spelling of 698765997 in words is "six hundred ninety-eight million, seven hundred sixty-five thousand, nine hundred ninety-seven".