60645581 has 2 divisors, whose sum is σ = 60645582. Its totient is φ = 60645580.

The previous prime is 60645521. The next prime is 60645589. The reversal of 60645581 is 18554606.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59923081 + 722500 = 7741^2 + 850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60645581 is a prime.

It is a super-2 number, since 2×60645581² = 7355772989655122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60645589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30322790 + 30322791.

It is an arithmetic number, because the mean of its divisors is an integer number (30322791).

Almost surely, 2^60645581 is an apocalyptic number.

It is an amenable number.

60645581 is a deficient number, since it is larger than the sum of its proper divisors (1).

60645581 is an equidigital number, since it uses as much as digits as its factorization.

60645581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 60645581 is about 7787.5272712203. The cubic root of 60645581 is about 392.8858493498.

The spelling of 60645581 in words is "sixty million, six hundred forty-five thousand, five hundred eighty-one".