665127360 has 168 divisors, whose sum is σ = 2303897856. Its totient is φ = 176117760.

The previous prime is 665127313. The next prime is 665127373. The reversal of 665127360 is 63721566.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 451425 + ... + 452895.

Almost surely, 2^665127360 is an apocalyptic number.

665127360 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 665127360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1151948928).

665127360 is an abundant number, since it is smaller than the sum of its proper divisors (1638770496).

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

665127360 is a wasteful number, since it uses less digits than its factorization.

665127360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 665127360 is about 25790.0632027143. The cubic root of 665127360 is about 872.9075924753.

The spelling of 665127360 in words is "six hundred sixty-five million, one hundred twenty-seven thousand, three hundred sixty".