2696679612649 has 9 divisors (see below), whose sum is σ = 2964138768381. Its totient is φ = 2451510499020.

The previous prime is 2696679612643. The next prime is 2696679612659. The reversal of 2696679612649 is 9462169766962.

The square root of 2696679612649 is 1642157.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2696679612649 - 2¹⁷ = 2696679481577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2696679612643) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17989084 + ... + 18138370.

Almost surely, 2^{2696679612649} is an apocalyptic number.

2696679612649 is the 1642157-th square number.

2696679612649 is the 821079-th centered octagonal number.

It is an amenable number.

2696679612649 is a deficient number, since it is larger than the sum of its proper divisors (267459155732).

2696679612649 is an frugal number, since it uses more digits than its factorization.

2696679612649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298596 (or 149298 counting only the distinct ones).

The product of its digits is 634894848, while the sum is 73.

The spelling of 2696679612649 in words is "two trillion, six hundred ninety-six billion, six hundred seventy-nine million, six hundred twelve thousand, six hundred forty-nine".