2770897644 has 18 divisors (see below), whose sum is σ = 7004213580. Its totient is φ = 923632536.

The previous prime is 2770897639. The next prime is 2770897663. The reversal of 2770897644 is 4467980772.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38484654 + ... + 38484725.

Almost surely, 2^2770897644 is an apocalyptic number.

It is an amenable number.

2770897644 is an abundant number, since it is smaller than the sum of its proper divisors (4233315936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2770897644 is a wasteful number, since it uses less digits than its factorization.

2770897644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76969389 (or 76969384 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The square root of 2770897644 is about 52639.3165229185. The cubic root of 2770897644 is about 1404.5595634032.

The spelling of 2770897644 in words is "two billion, seven hundred seventy million, eight hundred ninety-seven thousand, six hundred forty-four".