669715630290 has 96 divisors (see below), whose sum is σ = 1990516784256. Its totient is φ = 153039041280.

The previous prime is 669715630271. The next prime is 669715630291. The reversal of 669715630290 is 92036517966.

669715630290 is a `hidden beast` number, since 6 + 6 + 9 + 71 + 563 + 0 + 2 + 9 + 0 = 666.

669715630290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (669715630291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2389110 + ... + 2654670.

It is an arithmetic number, because the mean of its divisors is an integer number (20734549836).

Almost surely, 2^669715630290 is an apocalyptic number.

669715630290 is an abundant number, since it is smaller than the sum of its proper divisors (1320801153966).

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

669715630290 is a wasteful number, since it uses less digits than its factorization.

669715630290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269584 (or 269581 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 669715630290 in words is "six hundred sixty-nine billion, seven hundred fifteen million, six hundred thirty thousand, two hundred ninety".