65992645 has 24 divisors (see below), whose sum is σ = 84284928. Its totient is φ = 49550400.

The previous prime is 65992637. The next prime is 65992687. The reversal of 65992645 is 54629956.

65992645 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 65992645 - 2³ = 65992637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65992595 and 65992604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212040 + ... + 212350.

It is an arithmetic number, because the mean of its divisors is an integer number (3511872).

Almost surely, 2^65992645 is an apocalyptic number.

It is an amenable number.

65992645 is a deficient number, since it is larger than the sum of its proper divisors (18292283).

65992645 is a wasteful number, since it uses less digits than its factorization.

65992645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 384 counting only the distinct ones).

The product of its digits is 583200, while the sum is 46.

The square root of 65992645 is about 8123.5857230659. The cubic root of 65992645 is about 404.1089897266.

The spelling of 65992645 in words is "sixty-five million, nine hundred ninety-two thousand, six hundred forty-five".