690061624 has 16 divisors (see below), whose sum is σ = 1478703600. Its totient is φ = 295740672.

The previous prime is 690061591. The next prime is 690061649. The reversal of 690061624 is 426160096.

It is a self number, because there is not a number n which added to its sum of digits gives 690061624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6161209 + ... + 6161320.

It is an arithmetic number, because the mean of its divisors is an integer number (92418975).

Almost surely, 2^690061624 is an apocalyptic number.

It is an amenable number.

690061624 is an abundant number, since it is smaller than the sum of its proper divisors (788641976).

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

690061624 is a wasteful number, since it uses less digits than its factorization.

690061624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12322542 (or 12322538 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 690061624 is about 26269.0240397317. The cubic root of 690061624 is about 883.6818979269.

The spelling of 690061624 in words is "six hundred ninety million, sixty-one thousand, six hundred twenty-four".