2645770 has 8 divisors (see below), whose sum is σ = 4762404. Its totient is φ = 1058304.

The previous prime is 2645749. The next prime is 2645777. The reversal of 2645770 is 775462.

It can be written as a sum of positive squares in 2 ways, for example, as 2187441 + 458329 = 1479^2 + 677^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2645777) 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, 132279 + ... + 132298.

2^2645770 is an apocalyptic number.

2645770 is a deficient number, since it is larger than the sum of its proper divisors (2116634).

2645770 is a wasteful number, since it uses less digits than its factorization.

2645770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264584.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 2645770 is about 1626.5823065557. The cubic root of 2645770 is about 138.3090810857.

It can be divided in two parts, 26 and 45770, that added together give a square (45796 = 214²).

The spelling of 2645770 in words is "two million, six hundred forty-five thousand, seven hundred seventy".