56668061 has 2 divisors, whose sum is σ = 56668062. Its totient is φ = 56668060.

The previous prime is 56668049. The next prime is 56668063. The reversal of 56668061 is 16086665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56625625 + 42436 = 7525^2 + 206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56668061 is a prime.

It is a super-2 number, since 2×56668061² = 6422538274999442, which contains 22 as substring.

Together with 56668063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56668063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28334030 + 28334031.

It is an arithmetic number, because the mean of its divisors is an integer number (28334031).

Almost surely, 2^56668061 is an apocalyptic number.

It is an amenable number.

56668061 is a deficient number, since it is larger than the sum of its proper divisors (1).

56668061 is an equidigital number, since it uses as much as digits as its factorization.

56668061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 56668061 is about 7527.8191396978. The cubic root of 56668061 is about 384.1016011716.

The spelling of 56668061 in words is "fifty-six million, six hundred sixty-eight thousand, sixty-one".