665510152 has 64 divisors (see below), whose sum is σ = 1388793600. Its totient is φ = 297369600.

The previous prime is 665510149. The next prime is 665510161. The reversal of 665510152 is 251015566.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 471624 + ... + 473032.

It is an arithmetic number, because the mean of its divisors is an integer number (21699900).

Almost surely, 2^665510152 is an apocalyptic number.

It is an amenable number.

665510152 is an abundant number, since it is smaller than the sum of its proper divisors (723283448).

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

665510152 is a wasteful number, since it uses less digits than its factorization.

665510152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1602 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 665510152 is about 25797.4834431578. The cubic root of 665510152 is about 873.0750180353.

It can be divided in two parts, 6655 and 10152, that added together give a 5-th power (16807 = 7⁵).

The spelling of 665510152 in words is "six hundred sixty-five million, five hundred ten thousand, one hundred fifty-two".