689356801 has 4 divisors (see below), whose sum is σ = 787836352. Its totient is φ = 590877252.

The previous prime is 689356729. The next prime is 689356813. The reversal of 689356801 is 108653986.

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 689356801 - 2⁷ = 689356673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689356831) 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, 49239765 + ... + 49239778.

It is an arithmetic number, because the mean of its divisors is an integer number (196959088).

Almost surely, 2^689356801 is an apocalyptic number.

It is an amenable number.

689356801 is a deficient number, since it is larger than the sum of its proper divisors (98479551).

689356801 is an equidigital number, since it uses as much as digits as its factorization.

689356801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98479550.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 689356801 is about 26255.6051349041. The cubic root of 689356801 is about 883.3809337428.

The spelling of 689356801 in words is "six hundred eighty-nine million, three hundred fifty-six thousand, eight hundred one".