2590639 has 8 divisors (see below), whose sum is σ = 2694272. Its totient is φ = 2488320.

The previous prime is 2590633. The next prime is 2590649. The reversal of 2590639 is 9360952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2590639 - 2⁹ = 2590127 is a prime.

It is a super-2 number, since 2×2590639² = 13422820856642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2590633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5767 + ... + 6199.

It is an arithmetic number, because the mean of its divisors is an integer number (336784).

2^2590639 is an apocalyptic number.

2590639 is a deficient number, since it is larger than the sum of its proper divisors (103633).

2590639 is a wasteful number, since it uses less digits than its factorization.

2590639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 2590639 is about 1609.5462093398. The cubic root of 2590639 is about 137.3416623649.

The spelling of 2590639 in words is "two million, five hundred ninety thousand, six hundred thirty-nine".