65390093 has 2 divisors, whose sum is σ = 65390094. Its totient is φ = 65390092.

The previous prime is 65390071. The next prime is 65390107. The reversal of 65390093 is 39009356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59567524 + 5822569 = 7718^2 + 2413^2 .

It is a cyclic number.

It is not a de Polignac number, because 65390093 - 2¹⁸ = 65127949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65390023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32695046 + 32695047.

It is an arithmetic number, because the mean of its divisors is an integer number (32695047).

Almost surely, 2^65390093 is an apocalyptic number.

It is an amenable number.

65390093 is a deficient number, since it is larger than the sum of its proper divisors (1).

65390093 is an equidigital number, since it uses as much as digits as its factorization.

65390093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 65390093 is about 8086.4141002054. The cubic root of 65390093 is about 402.8753090543.

The spelling of 65390093 in words is "sixty-five million, three hundred ninety thousand, ninety-three".