65289998 has 4 divisors (see below), whose sum is σ = 97935000. Its totient is φ = 32644998.

The previous prime is 65289989. The next prime is 65290037. The reversal of 65289998 is 89998256.

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

It is a Curzon number.

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, 16322498 + ... + 16322501.

It is an arithmetic number, because the mean of its divisors is an integer number (24483750).

Almost surely, 2^65289998 is an apocalyptic number.

65289998 is a deficient number, since it is larger than the sum of its proper divisors (32645002).

65289998 is a wasteful number, since it uses less digits than its factorization.

65289998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32645001.

The product of its digits is 2799360, while the sum is 56.

The square root of 65289998 is about 8080.2226454473. Note that the first 3 decimals coincide. The cubic root of 65289998 is about 402.6696387671.

The spelling of 65289998 in words is "sixty-five million, two hundred eighty-nine thousand, nine hundred ninety-eight".