65428577 has 2 divisors, whose sum is σ = 65428578. Its totient is φ = 65428576.

The previous prime is 65428549. The next prime is 65428589. The reversal of 65428577 is 77582456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 6507601 = 7676^2 + 2551^2 .

It is a cyclic number.

It is not a de Polignac number, because 65428577 - 2¹² = 65424481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65428177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32714288 + 32714289.

It is an arithmetic number, because the mean of its divisors is an integer number (32714289).

Almost surely, 2^65428577 is an apocalyptic number.

It is an amenable number.

65428577 is a deficient number, since it is larger than the sum of its proper divisors (1).

65428577 is an equidigital number, since it uses as much as digits as its factorization.

65428577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 44.

The square root of 65428577 is about 8088.7932969016. The cubic root of 65428577 is about 402.9543282253.

The spelling of 65428577 in words is "sixty-five million, four hundred twenty-eight thousand, five hundred seventy-seven".