1665152 has 16 divisors (see below), whose sum is σ = 3317550. Its totient is φ = 832512.

The previous prime is 1665149. The next prime is 1665161. The reversal of 1665152 is 2515661.

It can be written as a sum of positive squares in only one way, i.e., 1577536 + 87616 = 1256^2 + 296^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377 + ... + 6632.

2^1665152 is an apocalyptic number.

It is an amenable number.

1665152 is a deficient number, since it is larger than the sum of its proper divisors (1652398).

1665152 is an equidigital number, since it uses as much as digits as its factorization.

1665152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13023 (or 13011 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1665152 is about 1290.4076875158. The cubic root of 1665152 is about 118.5271825456.

The spelling of 1665152 in words is "one million, six hundred sixty-five thousand, one hundred fifty-two".