1238565 has 8 divisors (see below), whose sum is σ = 1981728. Its totient is φ = 660560.

The previous prime is 1238551. The next prime is 1238597. The reversal of 1238565 is 5658321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1238565 - 2⁵ = 1238533 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41271 + ... + 41300.

It is an arithmetic number, because the mean of its divisors is an integer number (247716).

2^1238565 is an apocalyptic number.

1238565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1238565 is a deficient number, since it is larger than the sum of its proper divisors (743163).

1238565 is an equidigital number, since it uses as much as digits as its factorization.

1238565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82579.

The product of its digits is 7200, while the sum is 30.

The square root of 1238565 is about 1112.9083520219. The cubic root of 1238565 is about 107.3922482606.

The spelling of 1238565 in words is "one million, two hundred thirty-eight thousand, five hundred sixty-five".