2660697 has 12 divisors (see below), whose sum is σ = 4139044. Its totient is φ = 1637280.

The previous prime is 2660659. The next prime is 2660719. The reversal of 2660697 is 7960662.

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 2359296 = 549^2 + 1536^2 .

It is not a de Polignac number, because 2660697 - 2⁷ = 2660569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660657) 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, 11254 + ... + 11487.

2^2660697 is an apocalyptic number.

It is an amenable number.

2660697 is a deficient number, since it is larger than the sum of its proper divisors (1478347).

2660697 is a wasteful number, since it uses less digits than its factorization.

2660697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22760 (or 22757 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 2660697 is about 1631.1643080941. The cubic root of 2660697 is about 138.5686991653.

The spelling of 2660697 in words is "two million, six hundred sixty thousand, six hundred ninety-seven".