669777112 has 64 divisors (see below), whose sum is σ = 1346258880. Its totient is φ = 311680512.

The previous prime is 669777109. The next prime is 669777211. The reversal of 669777112 is 211777966.

It is a Harshad number since it is a multiple of its sum of digits (46).

Its product of digits (222264) is a multiple of the sum of its prime divisors (648).

It is a congruent number.

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, 1686898 + ... + 1687294.

It is an arithmetic number, because the mean of its divisors is an integer number (21035295).

Almost surely, 2^669777112 is an apocalyptic number.

It is an amenable number.

669777112 is an abundant number, since it is smaller than the sum of its proper divisors (676481768).

669777112 is a wasteful number, since it uses less digits than its factorization.

669777112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 648 counting only the distinct ones).

The product of its digits is 222264, while the sum is 46.

The square root of 669777112 is about 25880.0523956193. The cubic root of 669777112 is about 874.9369693917.

The spelling of 669777112 in words is "six hundred sixty-nine million, seven hundred seventy-seven thousand, one hundred twelve".