65198079 has 12 divisors (see below), whose sum is σ = 94809000. Its totient is φ = 43172784.

The previous prime is 65198069. The next prime is 65198083. The reversal of 65198079 is 97089156.

It is not a de Polignac number, because 65198079 - 2⁵ = 65198047 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65198039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22969 + ... + 25650.

It is an arithmetic number, because the mean of its divisors is an integer number (7900750).

Almost surely, 2^65198079 is an apocalyptic number.

65198079 is a deficient number, since it is larger than the sum of its proper divisors (29610921).

65198079 is a wasteful number, since it uses less digits than its factorization.

65198079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48774 (or 48771 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 65198079 is about 8074.5327418991. The cubic root of 65198079 is about 402.4805828885.

The spelling of 65198079 in words is "sixty-five million, one hundred ninety-eight thousand, seventy-nine".