690622866944 has 80 divisors (see below), whose sum is σ = 1411662022848. Its totient is φ = 337387487232.

The previous prime is 690622866937. The next prime is 690622866977. The reversal of 690622866944 is 449668226096.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 14245754 + ... + 14294150.

Almost surely, 2^690622866944 is an apocalyptic number.

690622866944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690622866944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705831011424).

690622866944 is an abundant number, since it is smaller than the sum of its proper divisors (721039155904).

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

690622866944 is an equidigital number, since it uses as much as digits as its factorization.

690622866944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49055 (or 49039 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 62.

The spelling of 690622866944 in words is "six hundred ninety billion, six hundred twenty-two million, eight hundred sixty-six thousand, nine hundred forty-four".