2091670 has 16 divisors (see below), whose sum is σ = 4303008. Its totient is φ = 717120.

The previous prime is 2091667. The next prime is 2091671. The reversal of 2091670 is 761902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091671) 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, 14871 + ... + 15010.

It is an arithmetic number, because the mean of its divisors is an integer number (268938).

2^2091670 is an apocalyptic number.

2091670 is an abundant number, since it is smaller than the sum of its proper divisors (2211338).

2091670 is a wasteful number, since it uses less digits than its factorization.

2091670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29895.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 2091670 is about 1446.2606957254. The cubic root of 2091670 is about 127.8883711011. Note that the first 3 decimals are identical.

It can be divided in two parts, 209 and 1670, that multiplied together give a triangular number (349030 = T₈₃₅).

The spelling of 2091670 in words is "two million, ninety-one thousand, six hundred seventy".