2391617 has 4 divisors (see below), whose sum is σ = 2447280. Its totient is φ = 2335956.

The previous prime is 2391589. The next prime is 2391629. The reversal of 2391617 is 7161932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2391617 - 2¹⁶ = 2326081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2391617.

It is not an unprimeable number, because it can be changed into a prime (2391637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27767 + ... + 27852.

It is an arithmetic number, because the mean of its divisors is an integer number (611820).

2^2391617 is an apocalyptic number.

It is an amenable number.

2391617 is a deficient number, since it is larger than the sum of its proper divisors (55663).

2391617 is an equidigital number, since it uses as much as digits as its factorization.

2391617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55662.

The product of its digits is 2268, while the sum is 29.

The square root of 2391617 is about 1546.4853701216. The cubic root of 2391617 is about 133.7305232652.

The spelling of 2391617 in words is "two million, three hundred ninety-one thousand, six hundred seventeen".