65583998 has 4 divisors (see below), whose sum is σ = 98376000. Its totient is φ = 32791998.

The previous prime is 65583961. The next prime is 65584007. The reversal of 65583998 is 89938556.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16395998 + ... + 16396001.

It is an arithmetic number, because the mean of its divisors is an integer number (24594000).

Almost surely, 2^65583998 is an apocalyptic number.

65583998 is a deficient number, since it is larger than the sum of its proper divisors (32792002).

65583998 is a wasteful number, since it uses less digits than its factorization.

65583998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32792001.

The product of its digits is 2332800, while the sum is 53.

The square root of 65583998 is about 8098.3947792140. The cubic root of 65583998 is about 403.2731391778.

The spelling of 65583998 in words is "sixty-five million, five hundred eighty-three thousand, nine hundred ninety-eight".