65983506 has 32 divisors (see below), whose sum is σ = 137204928. Its totient is φ = 21136320.

The previous prime is 65983501. The next prime is 65983507. The reversal of 65983506 is 60538956.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65983501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16636 + ... + 20216.

It is an arithmetic number, because the mean of its divisors is an integer number (4287654).

Almost surely, 2^65983506 is an apocalyptic number.

65983506 is an abundant number, since it is smaller than the sum of its proper divisors (71221422).

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

65983506 is a wasteful number, since it uses less digits than its factorization.

65983506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 65983506 is about 8123.0232056790. The cubic root of 65983506 is about 404.0903345035.

The spelling of 65983506 in words is "sixty-five million, nine hundred eighty-three thousand, five hundred six".