60568721 has 2 divisors, whose sum is σ = 60568722. Its totient is φ = 60568720.

The previous prime is 60568687. The next prime is 60568723. The reversal of 60568721 is 12786506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59985025 + 583696 = 7745^2 + 764^2 .

It is a cyclic number.

It is not a de Polignac number, because 60568721 - 2⁶ = 60568657 is a prime.

Together with 60568723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (60568723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30284360 + 30284361.

It is an arithmetic number, because the mean of its divisors is an integer number (30284361).

Almost surely, 2^60568721 is an apocalyptic number.

It is an amenable number.

60568721 is a deficient number, since it is larger than the sum of its proper divisors (1).

60568721 is an equidigital number, since it uses as much as digits as its factorization.

60568721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 60568721 is about 7782.5908924985. The cubic root of 60568721 is about 392.7198027788.

The spelling of 60568721 in words is "sixty million, five hundred sixty-eight thousand, seven hundred twenty-one".