2072761 has 4 divisors (see below), whose sum is σ = 2078692. Its totient is φ = 2066832.

The previous prime is 2072743. The next prime is 2072773. The reversal of 2072761 is 1672702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1672702 = 2 ⋅836351.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 462400 = 1269^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 2072761 - 2¹⁵ = 2039993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2072701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2406 + ... + 3151.

It is an arithmetic number, because the mean of its divisors is an integer number (519673).

2^2072761 is an apocalyptic number.

It is an amenable number.

2072761 is a deficient number, since it is larger than the sum of its proper divisors (5931).

2072761 is an equidigital number, since it uses as much as digits as its factorization.

2072761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5930.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 2072761 is about 1439.7086510819. The cubic root of 2072761 is about 127.5018274760.

The spelling of 2072761 in words is "two million, seventy-two thousand, seven hundred sixty-one".