3688420061 has 2 divisors, whose sum is σ = 3688420062. Its totient is φ = 3688420060.

The previous prime is 3688420051. The next prime is 3688420117. The reversal of 3688420061 is 1600248863.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2105892100 + 1582527961 = 45890^2 + 39781^2 .

It is an emirp because it is prime and its reverse (1600248863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3688420061 - 2³⁰ = 2614678237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3688419997 and 3688420024.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3688420051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844210030 + 1844210031.

It is an arithmetic number, because the mean of its divisors is an integer number (1844210031).

Almost surely, 2^3688420061 is an apocalyptic number.

It is an amenable number.

3688420061 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688420061 is an equidigital number, since it uses as much as digits as its factorization.

3688420061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 3688420061 is about 60732.3641973536. The cubic root of 3688420061 is about 1545.0651321676.

The spelling of 3688420061 in words is "three billion, six hundred eighty-eight million, four hundred twenty thousand, sixty-one".