65790157 has 2 divisors, whose sum is σ = 65790158. Its totient is φ = 65790156.

The previous prime is 65790139. The next prime is 65790161. The reversal of 65790157 is 75109756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52620516 + 13169641 = 7254^2 + 3629^2 .

It is a cyclic number.

It is not a de Polignac number, because 65790157 - 2¹⁵ = 65757389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65790457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32895078 + 32895079.

It is an arithmetic number, because the mean of its divisors is an integer number (32895079).

Almost surely, 2^65790157 is an apocalyptic number.

It is an amenable number.

65790157 is a deficient number, since it is larger than the sum of its proper divisors (1).

65790157 is an equidigital number, since it uses as much as digits as its factorization.

65790157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 65790157 is about 8111.1131788430. The cubic root of 65790157 is about 403.6952514210.

The spelling of 65790157 in words is "sixty-five million, seven hundred ninety thousand, one hundred fifty-seven".