665150 has 24 divisors (see below), whose sum is σ = 1265544. Its totient is φ = 260000.

The previous prime is 665141. The next prime is 665153. The reversal of 665150 is 51566.

665150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 665150.

It is not an unprimeable number, because it can be changed into a prime (665153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2525 + ... + 2775.

It is an arithmetic number, because the mean of its divisors is an integer number (52731).

2⁶⁶⁵¹⁵⁰ is an apocalyptic number.

665150 is a deficient number, since it is larger than the sum of its proper divisors (600394).

665150 is a wasteful number, since it uses less digits than its factorization.

665150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 665150 is about 815.5672872302. The cubic root of 665150 is about 87.2917496545.

It can be divided in two parts, 66 and 5150, that multiplied together give a triangular number (339900 = T₈₂₄).

The spelling of 665150 in words is "six hundred sixty-five thousand, one hundred fifty".