2658239 has 8 divisors (see below), whose sum is σ = 2829888. Its totient is φ = 2488320.

The previous prime is 2658221. The next prime is 2658247. The reversal of 2658239 is 9328562.

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 2658239 - 2¹² = 2654143 is a prime.

It is a super-2 number, since 2×2658239² = 14132469162242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹¹ + 6⁵ + 5⁹ + 8⁵ + 2¹⁷ + 3¹² + 9 .

It is a junction number, because it is equal to n+sod(n) for n = 2658199 and 2658208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2658209) 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, 4319 + ... + 4895.

It is an arithmetic number, because the mean of its divisors is an integer number (353736).

2^2658239 is an apocalyptic number.

2658239 is a deficient number, since it is larger than the sum of its proper divisors (171649).

2658239 is a wasteful number, since it uses less digits than its factorization.

2658239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its digits is 25920, while the sum is 35.

The square root of 2658239 is about 1630.4106844596. The cubic root of 2658239 is about 138.5260152619.

The spelling of 2658239 in words is "two million, six hundred fifty-eight thousand, two hundred thirty-nine".