2689643097 has 16 divisors (see below), whose sum is σ = 4194376000. Its totient is φ = 1698721632.

The previous prime is 2689643071. The next prime is 2689643107. The reversal of 2689643097 is 7903469862.

It is a happy number.

It is not a de Polignac number, because 2689643097 - 2¹⁴ = 2689626713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2689643027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2620972 + ... + 2621997.

It is an arithmetic number, because the mean of its divisors is an integer number (262148500).

Almost surely, 2^2689643097 is an apocalyptic number.

2689643097 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2689643097 is a deficient number, since it is larger than the sum of its proper divisors (1504732903).

2689643097 is a wasteful number, since it uses less digits than its factorization.

2689643097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242997 (or 5242991 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 2689643097 is about 51861.7691271711. The cubic root of 2689643097 is about 1390.6939062482.

The spelling of 2689643097 in words is "two billion, six hundred eighty-nine million, six hundred forty-three thousand, ninety-seven".