2620397 has 16 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 2231040.

The previous prime is 2620379. The next prime is 2620403. The reversal of 2620397 is 7930262.

It is a cyclic number.

It is not a de Polignac number, because 2620397 - 2⁸ = 2620141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15608 + ... + 15774.

It is an arithmetic number, because the mean of its divisors is an integer number (190512).

2^2620397 is an apocalyptic number.

It is an amenable number.

2620397 is a deficient number, since it is larger than the sum of its proper divisors (427795).

2620397 is a wasteful number, since it uses less digits than its factorization.

2620397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 2620397 is about 1618.7640346882. The cubic root of 2620397 is about 137.8655309900.

The spelling of 2620397 in words is "two million, six hundred twenty thousand, three hundred ninety-seven".