669908602434 has 8 divisors (see below), whose sum is σ = 1339817204880. Its totient is φ = 223302867476.

The previous prime is 669908602399. The next prime is 669908602439. The reversal of 669908602434 is 434206809966.

It is a happy number.

669908602434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

669908602434 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (669908602439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55825716864 + ... + 55825716875.

It is an arithmetic number, because the mean of its divisors is an integer number (167477150610).

Almost surely, 2^669908602434 is an apocalyptic number.

669908602434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

669908602434 is a wasteful number, since it uses less digits than its factorization.

669908602434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111651433744.

The product of its (nonzero) digits is 13436928, while the sum is 57.

The spelling of 669908602434 in words is "six hundred sixty-nine billion, nine hundred eight million, six hundred two thousand, four hundred thirty-four".