669961233360 has 120 divisors (see below), whose sum is σ = 2264853861504. Its totient is φ = 177473145600.

The previous prime is 669961233353. The next prime is 669961233373. The reversal of 669961233360 is 63332169966.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 669961233297 and 669961233306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2972412 + ... + 3189851.

Almost surely, 2^669961233360 is an apocalyptic number.

669961233360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669961233360 is an abundant number, since it is smaller than the sum of its proper divisors (1594892628144).

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

669961233360 is a wasteful number, since it uses less digits than its factorization.

669961233360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162433 (or 6162424 counting only the distinct ones).

The product of its (nonzero) digits is 5668704, while the sum is 54.

The spelling of 669961233360 in words is "six hundred sixty-nine billion, nine hundred sixty-one million, two hundred thirty-three thousand, three hundred sixty".