669154236 has 48 divisors (see below), whose sum is σ = 1700227200. Its totient is φ = 204023232.

The previous prime is 669154231. The next prime is 669154267. The reversal of 669154236 is 632451966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669154231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43990 + ... + 57213.

It is an arithmetic number, because the mean of its divisors is an integer number (35421400).

Almost surely, 2^669154236 is an apocalyptic number.

It is an amenable number.

669154236 is an abundant number, since it is smaller than the sum of its proper divisors (1031072964).

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

669154236 is a wasteful number, since it uses less digits than its factorization.

669154236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101258 (or 101256 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 669154236 is about 25868.0156950625. The cubic root of 669154236 is about 874.6656620887.

The spelling of 669154236 in words is "six hundred sixty-nine million, one hundred fifty-four thousand, two hundred thirty-six".