2660897 has 4 divisors (see below), whose sum is σ = 2693040. Its totient is φ = 2628756.

The previous prime is 2660887. The next prime is 2660899. The reversal of 2660897 is 7980662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7980662 = 2 ⋅3990331.

It is a cyclic number.

It is not a de Polignac number, because 2660897 - 2¹⁴ = 2644513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2660897.

It is not an unprimeable number, because it can be changed into a prime (2660899) 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, 15947 + ... + 16112.

It is an arithmetic number, because the mean of its divisors is an integer number (673260).

2^2660897 is an apocalyptic number.

It is an amenable number.

2660897 is a deficient number, since it is larger than the sum of its proper divisors (32143).

2660897 is an equidigital number, since it uses as much as digits as its factorization.

2660897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32142.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 2660897 is about 1631.2256128445. The cubic root of 2660897 is about 138.5721710683.

It can be divided in two parts, 2660 and 897, that multiplied together give a triangular number (2386020 = T₂₁₈₄).

The spelling of 2660897 in words is "two million, six hundred sixty thousand, eight hundred ninety-seven".