2164761 has 12 divisors (see below), whose sum is σ = 3228160. Its totient is φ = 1396440.

The previous prime is 2164739. The next prime is 2164787. The reversal of 2164761 is 1674612.

It is not a de Polignac number, because 2164761 - 2⁷ = 2164633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2163761) 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, 3601 + ... + 4158.

2^2164761 is an apocalyptic number.

It is an amenable number.

2164761 is a deficient number, since it is larger than the sum of its proper divisors (1063399).

2164761 is a wasteful number, since it uses less digits than its factorization.

2164761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7796 (or 7793 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2164761 is about 1471.3126792086. The cubic root of 2164761 is about 129.3609863698.

The spelling of 2164761 in words is "two million, one hundred sixty-four thousand, seven hundred sixty-one".