1248665 has 16 divisors (see below), whose sum is σ = 1662336. Its totient is φ = 892800.

The previous prime is 1248641. The next prime is 1248671. The reversal of 1248665 is 5668421.

It is not a de Polignac number, because 1248665 - 2¹⁰ = 1247641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3860 + ... + 4170.

It is an arithmetic number, because the mean of its divisors is an integer number (103896).

2^1248665 is an apocalyptic number.

It is an amenable number.

1248665 is a deficient number, since it is larger than the sum of its proper divisors (413671).

1248665 is a wasteful number, since it uses less digits than its factorization.

1248665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400.

The product of its digits is 11520, while the sum is 32.

The square root of 1248665 is about 1117.4367991077. The cubic root of 1248665 is about 107.6833719038.

The spelling of 1248665 in words is "one million, two hundred forty-eight thousand, six hundred sixty-five".