2645015 has 4 divisors (see below), whose sum is σ = 3174024. Its totient is φ = 2116008.

The previous prime is 2645011. The next prime is 2645051. The reversal of 2645015 is 5105462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2645015 - 2² = 2645011 is a prime.

It is a super-2 number, since 2×2645015² = 13992208700450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264497 + ... + 264506.

It is an arithmetic number, because the mean of its divisors is an integer number (793506).

2^2645015 is an apocalyptic number.

2645015 is a deficient number, since it is larger than the sum of its proper divisors (529009).

2645015 is an equidigital number, since it uses as much as digits as its factorization.

2645015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529008.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2645015 is about 1626.3502082885. The cubic root of 2645015 is about 138.2959238208.

The spelling of 2645015 in words is "two million, six hundred forty-five thousand, fifteen".