690404605152 has 48 divisors (see below), whose sum is σ = 1846506669840. Its totient is φ = 225792699392.

The previous prime is 690404605087. The next prime is 690404605169. The reversal of 690404605152 is 251506404096.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67841277 + ... + 67851452.

It is an arithmetic number, because the mean of its divisors is an integer number (38468888955).

Almost surely, 2^690404605152 is an apocalyptic number.

It is an amenable number.

690404605152 is an abundant number, since it is smaller than the sum of its proper divisors (1156102064688).

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

690404605152 is a wasteful number, since it uses less digits than its factorization.

690404605152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135692795 (or 135692787 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 690404605152 in words is "six hundred ninety billion, four hundred four million, six hundred five thousand, one hundred fifty-two".