1045665 has 24 divisors (see below), whose sum is σ = 1909440. Its totient is φ = 527904.

The previous prime is 1045663. The next prime is 1045679. The reversal of 1045665 is 5665401.

It is a happy number.

It is not a de Polignac number, because 1045665 - 2¹ = 1045663 is a prime.

It is a super-3 number, since 3×1045665³ = 3430038304633363875, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1045663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244 + ... + 1466.

It is an arithmetic number, because the mean of its divisors is an integer number (79560).

2^1045665 is an apocalyptic number.

1045665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1045665 is a deficient number, since it is larger than the sum of its proper divisors (863775).

1045665 is a wasteful number, since it uses less digits than its factorization.

1045665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1250 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1045665 is about 1022.5776254153. The cubic root of 1045665 is about 101.4995672448.

The spelling of 1045665 in words is "one million, forty-five thousand, six hundred sixty-five".