669548754 has 40 divisors (see below), whose sum is σ = 1714614528. Its totient is φ = 191299320.

The previous prime is 669548753. The next prime is 669548767. The reversal of 669548754 is 457845966.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 669548754.

It is not an unprimeable number, because it can be changed into a prime (669548753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 294082 + ... + 296349.

Almost surely, 2^669548754 is an apocalyptic number.

669548754 is an abundant number, since it is smaller than the sum of its proper divisors (1045065774).

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

669548754 is a wasteful number, since it uses less digits than its factorization.

669548754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590452 (or 590443 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The square root of 669548754 is about 25875.6401659940. The cubic root of 669548754 is about 874.8375225936.

The spelling of 669548754 in words is "six hundred sixty-nine million, five hundred forty-eight thousand, seven hundred fifty-four".