65398966 has 12 divisors (see below), whose sum is σ = 104209308. Its totient is φ = 30775712.

The previous prime is 65398961. The next prime is 65398967. The reversal of 65398966 is 66989356.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65398961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55996 + ... + 57151.

It is an arithmetic number, because the mean of its divisors is an integer number (8684109).

Almost surely, 2^65398966 is an apocalyptic number.

65398966 is a deficient number, since it is larger than the sum of its proper divisors (38810342).

65398966 is a wasteful number, since it uses less digits than its factorization.

65398966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113183 (or 113166 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 52.

The square root of 65398966 is about 8086.9627178564. The cubic root of 65398966 is about 402.8935307287.

The spelling of 65398966 in words is "sixty-five million, three hundred ninety-eight thousand, nine hundred sixty-six".