2687623 has 4 divisors (see below), whose sum is σ = 2720088. Its totient is φ = 2655160.

The previous prime is 2687621. The next prime is 2687639. The reversal of 2687623 is 3267862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2687623 - 2¹ = 2687621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687621) 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, 16108 + ... + 16273.

It is an arithmetic number, because the mean of its divisors is an integer number (680022).

2^2687623 is an apocalyptic number.

2687623 is a deficient number, since it is larger than the sum of its proper divisors (32465).

2687623 is an equidigital number, since it uses as much as digits as its factorization.

2687623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32464.

The product of its digits is 24192, while the sum is 34.

The square root of 2687623 is about 1639.3971452946. The cubic root of 2687623 is about 139.0345651838.

The spelling of 2687623 in words is "two million, six hundred eighty-seven thousand, six hundred twenty-three".