3668603761 has 9 divisors (see below), whose sum is σ = 3772739649. Its totient is φ = 3567271824.

The previous prime is 3668603759. The next prime is 3668603777. The reversal of 3668603761 is 1673068663.

The square root of 3668603761 is 60569.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 87778161 + 3580825600 = 9369^2 + 59840^2 .

It is not a de Polignac number, because 3668603761 - 2¹ = 3668603759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3668673761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2240235 + ... + 2241871.

Almost surely, 2^3668603761 is an apocalyptic number.

3668603761 is the 60569-th square number.

3668603761 is the 30285-th centered octagonal number.

It is an amenable number.

3668603761 is a deficient number, since it is larger than the sum of its proper divisors (104135888).

3668603761 is an frugal number, since it uses more digits than its factorization.

3668603761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The cubic root of 3668603761 is about 1542.2931711436.

The spelling of 3668603761 in words is "three billion, six hundred sixty-eight million, six hundred three thousand, seven hundred sixty-one".