669276740 has 48 divisors (see below), whose sum is σ = 1623452544. Its totient is φ = 229056000.

The previous prime is 669276733. The next prime is 669276749. The reversal of 669276740 is 47672966.

It is not an unprimeable number, because it can be changed into a prime (669276749) 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, 85736 + ... + 93215.

It is an arithmetic number, because the mean of its divisors is an integer number (33821928).

Almost surely, 2^669276740 is an apocalyptic number.

It is an amenable number.

669276740 is an abundant number, since it is smaller than the sum of its proper divisors (954175804).

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

669276740 is a wasteful number, since it uses less digits than its factorization.

669276740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178988 (or 178986 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 47.

The square root of 669276740 is about 25870.3834528984. The cubic root of 669276740 is about 874.7190346888.

The spelling of 669276740 in words is "six hundred sixty-nine million, two hundred seventy-six thousand, seven hundred forty".