698422051 has 4 divisors (see below), whose sum is σ = 722505600. Its totient is φ = 674338504.

The previous prime is 698421991. The next prime is 698422057. The reversal of 698422051 is 150224896.

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 698422051 - 2⁷ = 698421923 is a prime.

It is a super-2 number, since 2×698422051² = 975586722646093202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 698422051.

It is not an unprimeable number, because it can be changed into a prime (698422057) 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, 12041731 + ... + 12041788.

It is an arithmetic number, because the mean of its divisors is an integer number (180626400).

Almost surely, 2^698422051 is an apocalyptic number.

698422051 is a deficient number, since it is larger than the sum of its proper divisors (24083549).

698422051 is a wasteful number, since it uses less digits than its factorization.

698422051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24083548.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 698422051 is about 26427.6758531657. The cubic root of 698422051 is about 887.2363249236.

The spelling of 698422051 in words is "six hundred ninety-eight million, four hundred twenty-two thousand, fifty-one".