2652639 has 16 divisors (see below), whose sum is σ = 3984384. Its totient is φ = 1555200.

The previous prime is 2652623. The next prime is 2652667. The reversal of 2652639 is 9362562.

It is not a de Polignac number, because 2652639 - 2⁴ = 2652623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2652439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274 + ... + 2319.

It is an arithmetic number, because the mean of its divisors is an integer number (249024).

2^2652639 is an apocalyptic number.

2652639 is a deficient number, since it is larger than the sum of its proper divisors (1331745).

2652639 is a wasteful number, since it uses less digits than its factorization.

2652639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638.

The product of its digits is 19440, while the sum is 33.

The square root of 2652639 is about 1628.6924203176. The cubic root of 2652639 is about 138.4286712349.

It can be divided in two parts, 26526 and 39, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 2652639 in words is "two million, six hundred fifty-two thousand, six hundred thirty-nine".