2620641 has 8 divisors (see below), whose sum is σ = 3505600. Its totient is φ = 1741392.

The previous prime is 2620637. The next prime is 2620661. The reversal of 2620641 is 1460262.

It is a happy number.

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

It is not a de Polignac number, because 2620641 - 2² = 2620637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2620661) 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, 205 + ... + 2298.

It is an arithmetic number, because the mean of its divisors is an integer number (438200).

2^2620641 is an apocalyptic number.

It is an amenable number.

2620641 is a deficient number, since it is larger than the sum of its proper divisors (884959).

2620641 is a wasteful number, since it uses less digits than its factorization.

2620641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2620641 is about 1618.8393990758. The cubic root of 2620641 is about 137.8698100039.

The spelling of 2620641 in words is "two million, six hundred twenty thousand, six hundred forty-one".