2101659 has 36 divisors (see below), whose sum is σ = 3574584. Its totient is φ = 1091328.

The previous prime is 2101657. The next prime is 2101667. The reversal of 2101659 is 9561012.

It is not a de Polignac number, because 2101659 - 2¹ = 2101657 is a prime.

2101659 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2101651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72457 + ... + 72485.

It is an arithmetic number, because the mean of its divisors is an integer number (99294).

2^2101659 is an apocalyptic number.

2101659 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2101659 is a deficient number, since it is larger than the sum of its proper divisors (1472925).

2101659 is a wasteful number, since it uses less digits than its factorization.

2101659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 2101659 is about 1449.7099709942. The cubic root of 2101659 is about 128.0916295406.

The spelling of 2101659 in words is "two million, one hundred one thousand, six hundred fifty-nine".