65855998 has 16 divisors (see below), whose sum is σ = 108392256. Its totient is φ = 29820960.

The previous prime is 65855987. The next prime is 65856017. The reversal of 65855998 is 89955856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22518 + ... + 25273.

It is an arithmetic number, because the mean of its divisors is an integer number (6774516).

Almost surely, 2^65855998 is an apocalyptic number.

65855998 is a deficient number, since it is larger than the sum of its proper divisors (42536258).

65855998 is a wasteful number, since it uses less digits than its factorization.

65855998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47859.

The product of its digits is 3888000, while the sum is 55.

The square root of 65855998 is about 8115.1708546401. The cubic root of 65855998 is about 403.8298755981.

The spelling of 65855998 in words is "sixty-five million, eight hundred fifty-five thousand, nine hundred ninety-eight".