65157983 has 16 divisors (see below), whose sum is σ = 74057760. Its totient is φ = 56784000.

The previous prime is 65157949. The next prime is 65157997. The reversal of 65157983 is 38975156.

It is a cyclic number.

It is not a de Polignac number, because 65157983 - 2¹⁴ = 65141599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65157913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49433 + ... + 50733.

It is an arithmetic number, because the mean of its divisors is an integer number (4628610).

Almost surely, 2^65157983 is an apocalyptic number.

65157983 is a deficient number, since it is larger than the sum of its proper divisors (8899777).

65157983 is a wasteful number, since it uses less digits than its factorization.

65157983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498.

The product of its digits is 226800, while the sum is 44.

The square root of 65157983 is about 8072.0494919196. The cubic root of 65157983 is about 402.3980591341.

The spelling of 65157983 in words is "sixty-five million, one hundred fifty-seven thousand, nine hundred eighty-three".