2689229864 has 16 divisors (see below), whose sum is σ = 5338912500. Its totient is φ = 1265519872.

The previous prime is 2689229833. The next prime is 2689229941. The reversal of 2689229864 is 4689229862.

It can be written as a sum of positive squares in 2 ways, for example, as 2228784100 + 460445764 = 47210^2 + 21458^2 .

It is a super-2 number, since 2×2689229864² = 14463914522858916992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9886739 + ... + 9887010.

Almost surely, 2^2689229864 is an apocalyptic number.

It is an amenable number.

2689229864 is a deficient number, since it is larger than the sum of its proper divisors (2649682636).

2689229864 is a wasteful number, since it uses less digits than its factorization.

2689229864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19773772 (or 19773768 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 56.

The square root of 2689229864 is about 51857.7849893341. The cubic root of 2689229864 is about 1390.6226811788.

The spelling of 2689229864 in words is "two billion, six hundred eighty-nine million, two hundred twenty-nine thousand, eight hundred sixty-four".