2624638 has 4 divisors (see below), whose sum is σ = 3936960. Its totient is φ = 1312318.

The previous prime is 2624627. The next prime is 2624639. The reversal of 2624638 is 8364262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8364262 = 2 ⋅4182131.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2624639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656158 + ... + 656161.

It is an arithmetic number, because the mean of its divisors is an integer number (984240).

2^2624638 is an apocalyptic number.

2624638 is a deficient number, since it is larger than the sum of its proper divisors (1312322).

2624638 is a wasteful number, since it uses less digits than its factorization.

2624638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312321.

The product of its digits is 13824, while the sum is 31.

The square root of 2624638 is about 1620.0734551248. The cubic root of 2624638 is about 137.9398673812.

It can be divided in two parts, 262 and 4638, that added together give a square (4900 = 70²).

The spelling of 2624638 in words is "two million, six hundred twenty-four thousand, six hundred thirty-eight".