2661759 has 6 divisors (see below), whose sum is σ = 3844776. Its totient is φ = 1774500.

The previous prime is 2661739. The next prime is 2661779. The reversal of 2661759 is 9571662.

It is an interprime number because it is at equal distance from previous prime (2661739) and next prime (2661779).

It is not a de Polignac number, because 2661759 - 2²¹ = 564607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147867 + ... + 147884.

It is an arithmetic number, because the mean of its divisors is an integer number (640796).

2^2661759 is an apocalyptic number.

2661759 is a deficient number, since it is larger than the sum of its proper divisors (1183017).

2661759 is a wasteful number, since it uses less digits than its factorization.

2661759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295757 (or 295754 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 2661759 is about 1631.4898099590. The cubic root of 2661759 is about 138.5871329797.

Subtracting 2661759 from its reverse (9571662), we obtain a triangular number (6909903 = T₃₇₁₇).

It can be divided in two parts, 266 and 1759, that added together give a square (2025 = 45²).

The spelling of 2661759 in words is "two million, six hundred sixty-one thousand, seven hundred fifty-nine".