2620863 has 32 divisors (see below), whose sum is σ = 4544000. Its totient is φ = 1492344.

The previous prime is 2620847. The next prime is 2620883. The reversal of 2620863 is 3680262.

It is not a de Polignac number, because 2620863 - 2⁴ = 2620847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9120 + ... + 9402.

It is an arithmetic number, because the mean of its divisors is an integer number (142000).

2^2620863 is an apocalyptic number.

2620863 is a deficient number, since it is larger than the sum of its proper divisors (1923137).

2620863 is an equidigital number, since it uses as much as digits as its factorization.

2620863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2620863 is about 1618.9079652655. The cubic root of 2620863 is about 137.8737029743.

The spelling of 2620863 in words is "two million, six hundred twenty thousand, eight hundred sixty-three".