2608838661 has 32 divisors (see below), whose sum is σ = 4197045888. Its totient is φ = 1420035840.

The previous prime is 2608838629. The next prime is 2608838671. The reversal of 2608838661 is 1668388062.

It is not a de Polignac number, because 2608838661 - 2⁵ = 2608838629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2608838661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2608838621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66306 + ... + 98051.

It is an arithmetic number, because the mean of its divisors is an integer number (131157684).

Almost surely, 2^2608838661 is an apocalyptic number.

It is an amenable number.

2608838661 is a deficient number, since it is larger than the sum of its proper divisors (1588207227).

2608838661 is a wasteful number, since it uses less digits than its factorization.

2608838661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164421.

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 2608838661 is about 51076.7918041061. The cubic root of 2608838661 is about 1376.6252800659.

The spelling of 2608838661 in words is "two billion, six hundred eight million, eight hundred thirty-eight thousand, six hundred sixty-one".