65863998 has 12 divisors (see below), whose sum is σ = 142705368. Its totient is φ = 21954660.

The previous prime is 65863997. The next prime is 65864011. The reversal of 65863998 is 89936856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65863997) 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, 1829538 + ... + 1829573.

It is an arithmetic number, because the mean of its divisors is an integer number (11892114).

Almost surely, 2^65863998 is an apocalyptic number.

65863998 is an abundant number, since it is smaller than the sum of its proper divisors (76841370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65863998 is a wasteful number, since it uses less digits than its factorization.

65863998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659119 (or 3659116 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 65863998 is about 8115.6637436503. The cubic root of 65863998 is about 403.8462269723.

The spelling of 65863998 in words is "sixty-five million, eight hundred sixty-three thousand, nine hundred ninety-eight".