669422140 has 24 divisors (see below), whose sum is σ = 1409783760. Its totient is φ = 267007488.

The previous prime is 669422137. The next prime is 669422197. The reversal of 669422140 is 41224966.

It is a junction number, because it is equal to n+sod(n) for n = 669422096 and 669422105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40350 + ... + 54469.

It is an arithmetic number, because the mean of its divisors is an integer number (58740990).

Almost surely, 2^669422140 is an apocalyptic number.

It is an amenable number.

669422140 is an abundant number, since it is smaller than the sum of its proper divisors (740361620).

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

669422140 is a wasteful number, since it uses less digits than its factorization.

669422140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95181 (or 95179 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 669422140 is about 25873.1934635058. The cubic root of 669422140 is about 874.7823741770.

The spelling of 669422140 in words is "six hundred sixty-nine million, four hundred twenty-two thousand, one hundred forty".