2604069 has 20 divisors (see below), whose sum is σ = 4190956. Its totient is φ = 1601856.

The previous prime is 2604061. The next prime is 2604071. The reversal of 2604069 is 9604062.

2604069 = T₇ + T₈ + ... + T₂₄₉.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 1476225 = 1062^2 + 1215^2 .

It is not a de Polignac number, because 2604069 - 2³ = 2604061 is a prime.

It is a super-2 number, since 2×2604069² = 13562350713522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604061) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 184 + ... + 2289.

2^2604069 is an apocalyptic number.

It is an amenable number.

2604069 is a deficient number, since it is larger than the sum of its proper divisors (1586887).

2604069 is a wasteful number, since it uses less digits than its factorization.

2604069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2604069 is about 1613.7127997261. The cubic root of 2604069 is about 137.5785820786.

The spelling of 2604069 in words is "two million, six hundred four thousand, sixty-nine".