690636642016 has 12 divisors (see below), whose sum is σ = 1359690889032. Its totient is φ = 345318320992.

The previous prime is 690636641987. The next prime is 690636642041. The reversal of 690636642016 is 610246636096.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10791197500 + ... + 10791197563.

It is an arithmetic number, because the mean of its divisors is an integer number (113307574086).

Almost surely, 2^690636642016 is an apocalyptic number.

It is an amenable number.

690636642016 is a deficient number, since it is larger than the sum of its proper divisors (669054247016).

690636642016 is a wasteful number, since it uses less digits than its factorization.

690636642016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21582395073 (or 21582395065 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 690636642016 in words is "six hundred ninety billion, six hundred thirty-six million, six hundred forty-two thousand, sixteen".