2261705 has 16 divisors (see below), whose sum is σ = 2882304. Its totient is φ = 1700160.

The previous prime is 2261689. The next prime is 2261713. The reversal of 2261705 is 5071622.

It is not a de Polignac number, because 2261705 - 2⁴ = 2261689 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8027 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (180144).

2^2261705 is an apocalyptic number.

It is an amenable number.

2261705 is a deficient number, since it is larger than the sum of its proper divisors (620599).

2261705 is a wasteful number, since it uses less digits than its factorization.

2261705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2261705 is about 1503.8966054886. The cubic root of 2261705 is about 131.2639048005.

It can be divided in two parts, 2261 and 705, that multiplied together give a triangular number (1594005 = T₁₇₈₅).

The spelling of 2261705 in words is "two million, two hundred sixty-one thousand, seven hundred five".