2689456897 has 16 divisors (see below), whose sum is σ = 2933064000. Its totient is φ = 2456322624.

The previous prime is 2689456883. The next prime is 2689456909. The reversal of 2689456897 is 7986549862.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2689456897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2689456817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400554 + ... + 407212.

It is an arithmetic number, because the mean of its divisors is an integer number (183316500).

Almost surely, 2^2689456897 is an apocalyptic number.

It is an amenable number.

2689456897 is a deficient number, since it is larger than the sum of its proper divisors (243607103).

2689456897 is a wasteful number, since it uses less digits than its factorization.

2689456897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440.

The product of its digits is 52254720, while the sum is 64.

The square root of 2689456897 is about 51859.9739394458. The cubic root of 2689456897 is about 1390.6618136158.

The spelling of 2689456897 in words is "two billion, six hundred eighty-nine million, four hundred fifty-six thousand, eight hundred ninety-seven".