690023735808 has 160 divisors (see below), whose sum is σ = 2006009375040. Its totient is φ = 209032642560.

The previous prime is 690023735783. The next prime is 690023735831. The reversal of 690023735808 is 808537320096.

It is a super-2 number, since 2×690023735808² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105039148 + ... + 105045716.

It is an arithmetic number, because the mean of its divisors is an integer number (12537558594).

Almost surely, 2^690023735808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690023735808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003004687520).

690023735808 is an abundant number, since it is smaller than the sum of its proper divisors (1315985639232).

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

690023735808 is a wasteful number, since it uses less digits than its factorization.

690023735808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12818 (or 12802 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 690023735808 in words is "six hundred ninety billion, twenty-three million, seven hundred thirty-five thousand, eight hundred eight".