669961927360 has 112 divisors (see below), whose sum is σ = 1741544001792. Its totient is φ = 243459353600.

The previous prime is 669961927351. The next prime is 669961927423. The reversal of 669961927360 is 63729169966.

It is a super-2 number, since 2×669961927360² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a junction number, because it is equal to n+sod(n) for n = 669961927292 and 669961927301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5255739 + ... + 5381701.

It is an arithmetic number, because the mean of its divisors is an integer number (15549500016).

Almost surely, 2^669961927360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669961927360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870772000896).

669961927360 is an abundant number, since it is smaller than the sum of its proper divisors (1071582074432).

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

669961927360 is a wasteful number, since it uses less digits than its factorization.

669961927360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127502 (or 127492 counting only the distinct ones).

The product of its (nonzero) digits is 39680928, while the sum is 64.

The spelling of 669961927360 in words is "six hundred sixty-nine billion, nine hundred sixty-one million, nine hundred twenty-seven thousand, three hundred sixty".