2697891968 has 24 divisors (see below), whose sum is σ = 5375877615. Its totient is φ = 1348652160.

The previous prime is 2697891967. The next prime is 2697891971. The reversal of 2697891968 is 8691987962.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1348945984 + 1348945984 = 36728^2 + 36728^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=36728.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2697891967) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 585353 + ... + 589943.

Almost surely, 2^2697891968 is an apocalyptic number.

It is an amenable number.

2697891968 is a deficient number, since it is larger than the sum of its proper divisors (2677985647).

2697891968 is an frugal number, since it uses more digits than its factorization.

2697891968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9196 (or 4593 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 65.

The square root of 2697891968 is about 51941.2357188390. The cubic root of 2697891968 is about 1392.1141624782.

The spelling of 2697891968 in words is "two billion, six hundred ninety-seven million, eight hundred ninety-one thousand, nine hundred sixty-eight".