698132791 has 4 divisors (see below), whose sum is σ = 698203800. Its totient is φ = 698061784.

The previous prime is 698132753. The next prime is 698132833. The reversal of 698132791 is 197231896.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 698132791 - 2¹⁵ = 698100023 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 (698132891) 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, 17821 + ... + 41398.

It is an arithmetic number, because the mean of its divisors is an integer number (174550950).

Almost surely, 2^698132791 is an apocalyptic number.

698132791 is a deficient number, since it is larger than the sum of its proper divisors (71009).

698132791 is a wasteful number, since it uses less digits than its factorization.

698132791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71008.

The product of its digits is 163296, while the sum is 46.

The square root of 698132791 is about 26422.2026144680. The cubic root of 698132791 is about 887.1138214327.

The spelling of 698132791 in words is "six hundred ninety-eight million, one hundred thirty-two thousand, seven hundred ninety-one".