2620261 has 16 divisors (see below), whose sum is σ = 3217536. Its totient is φ = 2082816.

The previous prime is 2620259. The next prime is 2620273. The reversal of 2620261 is 1620262.

It is a cyclic number.

It is not a de Polignac number, because 2620261 - 2¹ = 2620259 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11430 + ... + 11656.

It is an arithmetic number, because the mean of its divisors is an integer number (201096).

2^2620261 is an apocalyptic number.

It is an amenable number.

2620261 is a deficient number, since it is larger than the sum of its proper divisors (597275).

2620261 is a wasteful number, since it uses less digits than its factorization.

2620261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2620261 is about 1618.7220267853. The cubic root of 2620261 is about 137.8631458505.

Subtracting from 2620261 its reverse (1620262), we obtain a palindrome (999999).

The spelling of 2620261 in words is "two million, six hundred twenty thousand, two hundred sixty-one".