2081615 has 12 divisors (see below), whose sum is σ = 2614584. Its totient is φ = 1590864.

The previous prime is 2081609. The next prime is 2081617. The reversal of 2081615 is 5161802.

It is not a de Polignac number, because 2081615 - 2¹⁰ = 2080591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2252 + ... + 3038.

It is an arithmetic number, because the mean of its divisors is an integer number (217882).

2^2081615 is an apocalyptic number.

2081615 is a deficient number, since it is larger than the sum of its proper divisors (532969).

2081615 is an equidigital number, since it uses as much as digits as its factorization.

2081615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2081615 is about 1442.7803020557. The cubic root of 2081615 is about 127.6831150727.

The spelling of 2081615 in words is "two million, eighty-one thousand, six hundred fifteen".