2708204661 has 6 divisors (see below), whose sum is σ = 3911851190. Its totient is φ = 1805469768.

The previous prime is 2708204657. The next prime is 2708204663. The reversal of 2708204661 is 1664028072.

It can be written as a sum of positive squares in only one way, i.e., 1735139025 + 973065636 = 41655^2 + 31194^2 .

It is not a de Polignac number, because 2708204661 - 2² = 2708204657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2708204663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 150455806 + ... + 150455823.

Almost surely, 2^2708204661 is an apocalyptic number.

It is an amenable number.

2708204661 is a deficient number, since it is larger than the sum of its proper divisors (1203646529).

2708204661 is a wasteful number, since it uses less digits than its factorization.

2708204661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300911635 (or 300911632 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 2708204661 is about 52040.4137281786. The cubic root of 2708204661 is about 1393.8856927927.

The spelling of 2708204661 in words is "two billion, seven hundred eight million, two hundred four thousand, six hundred sixty-one".