2602639 has 16 divisors (see below), whose sum is σ = 3034080. Its totient is φ = 2211840.

The previous prime is 2602637. The next prime is 2602673. The reversal of 2602639 is 9362062.

It is a cyclic number.

It is not a de Polignac number, because 2602639 - 2¹ = 2602637 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 (2602637) 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, 9999 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (189630).

2^2602639 is an apocalyptic number.

2602639 is a deficient number, since it is larger than the sum of its proper divisors (431441).

2602639 is a wasteful number, since it uses less digits than its factorization.

2602639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 2602639 is about 1613.2696612780. The cubic root of 2602639 is about 137.5533941393.

The spelling of 2602639 in words is "two million, six hundred two thousand, six hundred thirty-nine".