669377358 has 80 divisors (see below), whose sum is σ = 1667546496. Its totient is φ = 199298880.

The previous prime is 669377351. The next prime is 669377411. The reversal of 669377358 is 853773966.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669377351) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60160 + ... + 70412.

Almost surely, 2^669377358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669377358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833773248).

669377358 is an abundant number, since it is smaller than the sum of its proper divisors (998169138).

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

669377358 is a wasteful number, since it uses less digits than its factorization.

669377358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311 (or 10302 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 669377358 is about 25872.3280359538. The cubic root of 669377358 is about 874.7628671148.

The spelling of 669377358 in words is "six hundred sixty-nine million, three hundred seventy-seven thousand, three hundred fifty-eight".