2660497 has 4 divisors (see below), whose sum is σ = 3040576. Its totient is φ = 2280420.

The previous prime is 2660473. The next prime is 2660509. The reversal of 2660497 is 7940662.

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: 7940662 = 2 ⋅3970331.

It is a cyclic number.

It is not a de Polignac number, because 2660497 - 2¹¹ = 2658449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660417) 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, 190029 + ... + 190042.

It is an arithmetic number, because the mean of its divisors is an integer number (760144).

2^2660497 is an apocalyptic number.

It is an amenable number.

2660497 is a deficient number, since it is larger than the sum of its proper divisors (380079).

2660497 is an equidigital number, since it uses as much as digits as its factorization.

2660497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380078.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 2660497 is about 1631.1030010395. The cubic root of 2660497 is about 138.5652270884.

The spelling of 2660497 in words is "two million, six hundred sixty thousand, four hundred ninety-seven".