689992433802 has 64 divisors (see below), whose sum is σ = 1755960483840. Its totient is φ = 196735836528.

The previous prime is 689992433797. The next prime is 689992433821. The reversal of 689992433802 is 208334299986.

689992433802 is a `hidden beast` number, since 6 + 8 + 9 + 9 + 9 + 243 + 380 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 689992433802.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1690018 + ... + 2058189.

It is an arithmetic number, because the mean of its divisors is an integer number (27436882560).

Almost surely, 2^689992433802 is an apocalyptic number.

689992433802 is an abundant number, since it is smaller than the sum of its proper divisors (1065968050038).

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

689992433802 is a wasteful number, since it uses less digits than its factorization.

689992433802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748712 (or 3748706 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 689992433802 in words is "six hundred eighty-nine billion, nine hundred ninety-two million, four hundred thirty-three thousand, eight hundred two".