2645513 has 8 divisors (see below), whose sum is σ = 2866248. Its totient is φ = 2427264.

The previous prime is 2645507. The next prime is 2645519. The reversal of 2645513 is 3155462.

It is an interprime number because it is at equal distance from previous prime (2645507) and next prime (2645519).

It can be written as a sum of positive squares in 4 ways, for example, as 1408969 + 1236544 = 1187^2 + 1112^2 .

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 2645513 - 2⁸ = 2645257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645519) 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, 2045 + ... + 3077.

It is an arithmetic number, because the mean of its divisors is an integer number (358281).

2^2645513 is an apocalyptic number.

It is an amenable number.

2645513 is a deficient number, since it is larger than the sum of its proper divisors (220735).

2645513 is a wasteful number, since it uses less digits than its factorization.

2645513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its digits is 3600, while the sum is 26.

The square root of 2645513 is about 1626.5033046385. The cubic root of 2645513 is about 138.3046026686.

The spelling of 2645513 in words is "two million, six hundred forty-five thousand, five hundred thirteen".