2620245 has 16 divisors (see below), whose sum is σ = 4213440. Its totient is φ = 1390464.

The previous prime is 2620231. The next prime is 2620253. The reversal of 2620245 is 5420262.

2620245 = 373² + 374² + ... + 390².

It is not a de Polignac number, because 2620245 - 2⁶ = 2620181 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4321 + ... + 4889.

It is an arithmetic number, because the mean of its divisors is an integer number (263340).

2^2620245 is an apocalyptic number.

It is an amenable number.

2620245 is a deficient number, since it is larger than the sum of its proper divisors (1593195).

2620245 is a wasteful number, since it uses less digits than its factorization.

2620245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2620245 is about 1618.7170846074. The cubic root of 2620245 is about 137.8628652405.

The spelling of 2620245 in words is "two million, six hundred twenty thousand, two hundred forty-five".