690493439982 has 16 divisors (see below), whose sum is σ = 1380996467280. Its totient is φ = 230162882112.

The previous prime is 690493439969. The next prime is 690493440029. The reversal of 690493439982 is 289934394096.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825994 + ... + 1436402.

It is an arithmetic number, because the mean of its divisors is an integer number (86312279205).

Almost surely, 2^690493439982 is an apocalyptic number.

690493439982 is an abundant number, since it is smaller than the sum of its proper divisors (690503027298).

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

690493439982 is a wasteful number, since it uses less digits than its factorization.

690493439982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798947.

The product of its (nonzero) digits is 90699264, while the sum is 66.

The spelling of 690493439982 in words is "six hundred ninety billion, four hundred ninety-three million, four hundred thirty-nine thousand, nine hundred eighty-two".