65427997 has 2 divisors, whose sum is σ = 65427998. Its totient is φ = 65427996.

The previous prime is 65427961. The next prime is 65428003. The reversal of 65427997 is 79972456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55562116 + 9865881 = 7454^2 + 3141^2 .

It is a cyclic number.

It is not a de Polignac number, because 65427997 - 2¹⁵ = 65395229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65427997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65427937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32713998 + 32713999.

It is an arithmetic number, because the mean of its divisors is an integer number (32713999).

Almost surely, 2^65427997 is an apocalyptic number.

It is an amenable number.

65427997 is a deficient number, since it is larger than the sum of its proper divisors (1).

65427997 is an equidigital number, since it uses as much as digits as its factorization.

65427997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 49.

The square root of 65427997 is about 8088.7574447501. The cubic root of 65427997 is about 402.9531375417.

The spelling of 65427997 in words is "sixty-five million, four hundred twenty-seven thousand, nine hundred ninety-seven".