371665 has 24 divisors (see below), whose sum is σ = 545832. Its totient is φ = 241920.

The previous prime is 371663. The next prime is 371669. The reversal of 371665 is 566173.

It can be written as a sum of positive squares in 4 ways, for example, as 25921 + 345744 = 161^2 + 588^2 .

It is not a de Polignac number, because 371665 - 2¹ = 371663 is a prime.

Its product of digits (3780) is a multiple of the sum of its prime divisors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (371663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9045 + ... + 9085.

It is an arithmetic number, because the mean of its divisors is an integer number (22743).

2³⁷¹⁶⁶⁵ is an apocalyptic number.

371665 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

371665 is a deficient number, since it is larger than the sum of its proper divisors (174167).

371665 is a wasteful number, since it uses less digits than its factorization.

371665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 90 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 371665 is about 609.6433383545. The cubic root of 371665 is about 71.8980682099.

The spelling of 371665 in words is "three hundred seventy-one thousand, six hundred sixty-five".