23970865 has 8 divisors (see below), whose sum is σ = 29236968. Its totient is φ = 18862080.

The previous prime is 23970847. The next prime is 23970883. The reversal of 23970865 is 56807932.

It is an interprime number because it is at equal distance from previous prime (23970847) and next prime (23970883).

It can be written as a sum of positive squares in 4 ways, for example, as 49 + 23970816 = 7^2 + 4896^2 .

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

It is not a de Polignac number, because 23970865 - 2¹⁵ = 23938097 is a prime.

It is a Duffinian 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, 38992 + ... + 39601.

It is an arithmetic number, because the mean of its divisors is an integer number (3654621).

Almost surely, 2^23970865 is an apocalyptic number.

It is an amenable number.

23970865 is a deficient number, since it is larger than the sum of its proper divisors (5266103).

23970865 is an equidigital number, since it uses as much as digits as its factorization.

23970865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78659.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 23970865 is about 4896.0050040824. The cubic root of 23970865 is about 288.3331447387. Note that the first 3 decimals are identical.

The spelling of 23970865 in words is "twenty-three million, nine hundred seventy thousand, eight hundred sixty-five".