669069360 has 120 divisors (see below), whose sum is σ = 2261139504. Its totient is φ = 177292800.

The previous prime is 669069347. The next prime is 669069383. The reversal of 669069360 is 63960966.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114510 + ... + 120210.

Almost surely, 2^669069360 is an apocalyptic number.

669069360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669069360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130569752).

669069360 is an abundant number, since it is smaller than the sum of its proper divisors (1592070144).

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

669069360 is a wasteful number, since it uses less digits than its factorization.

669069360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883 (or 5874 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The square root of 669069360 is about 25866.3750842672. The cubic root of 669069360 is about 874.6286794532.

The spelling of 669069360 in words is "six hundred sixty-nine million, sixty-nine thousand, three hundred sixty".