669277380 has 48 divisors (see below), whose sum is σ = 1880988480. Its totient is φ = 177806208.

The previous prime is 669277379. The next prime is 669277381. The reversal of 669277380 is 83772966.

669277380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (669277379) and next prime (669277381).

It is a super-2 number, since 2×669277380² = 895864422759328800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (669277381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4594 + ... + 36873.

It is an arithmetic number, because the mean of its divisors is an integer number (39187260).

Almost surely, 2^669277380 is an apocalyptic number.

669277380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669277380 is an abundant number, since it is smaller than the sum of its proper divisors (1211711100).

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

669277380 is a wasteful number, since it uses less digits than its factorization.

669277380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41748 (or 41746 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 669277380 is about 25870.3958222521. The cubic root of 669277380 is about 874.7193135071.

The spelling of 669277380 in words is "six hundred sixty-nine million, two hundred seventy-seven thousand, three hundred eighty".