65198069 has 2 divisors, whose sum is σ = 65198070. Its totient is φ = 65198068.

The previous prime is 65198059. The next prime is 65198083. The reversal of 65198069 is 96089156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 25633969 = 6290^2 + 5063^2 .

It is a cyclic number.

It is not a de Polignac number, because 65198069 - 2⁸ = 65197813 is a prime.

It is a super-2 number, since 2×65198069² = 8501576402657522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65198039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32599034 + 32599035.

It is an arithmetic number, because the mean of its divisors is an integer number (32599035).

Almost surely, 2^65198069 is an apocalyptic number.

It is an amenable number.

65198069 is a deficient number, since it is larger than the sum of its proper divisors (1).

65198069 is an equidigital number, since it uses as much as digits as its factorization.

65198069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 65198069 is about 8074.5321226682. The cubic root of 65198069 is about 402.4805623112.

The spelling of 65198069 in words is "sixty-five million, one hundred ninety-eight thousand, sixty-nine".