65945437 has 4 divisors (see below), whose sum is σ = 66048640. Its totient is φ = 65842236.

The previous prime is 65945417. The next prime is 65945459. The reversal of 65945437 is 73454956.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65945437 - 2¹⁵ = 65912669 is a prime.

It is a super-2 number, since 2×65945437² = 8697601322241938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65945393 and 65945402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65945417) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 50637 + ... + 51922.

It is an arithmetic number, because the mean of its divisors is an integer number (16512160).

Almost surely, 2^65945437 is an apocalyptic number.

It is an amenable number.

65945437 is a deficient number, since it is larger than the sum of its proper divisors (103203).

65945437 is a wasteful number, since it uses less digits than its factorization.

65945437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103202.

The product of its digits is 453600, while the sum is 43.

The square root of 65945437 is about 8120.6795897880. The cubic root of 65945437 is about 404.0126066223.

The spelling of 65945437 in words is "sixty-five million, nine hundred forty-five thousand, four hundred thirty-seven".