2101707 has 24 divisors (see below), whose sum is σ = 3257040. Its totient is φ = 1355940.

The previous prime is 2101703. The next prime is 2101721. The reversal of 2101707 is 7071012.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 2101707 - 2² = 2101703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2101707.

It is not an unprimeable number, because it can be changed into a prime (2101703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67782 + ... + 67812.

It is an arithmetic number, because the mean of its divisors is an integer number (135710).

2^2101707 is an apocalyptic number.

2101707 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2101707 is a deficient number, since it is larger than the sum of its proper divisors (1155333).

2101707 is an frugal number, since it uses more digits than its factorization.

2101707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 2101707 is about 1449.7265259352. The cubic root of 2101707 is about 128.0926046990.

Adding to 2101707 its reverse (7071012), we get a palindrome (9172719).

The spelling of 2101707 in words is "two million, one hundred one thousand, seven hundred seven".