65944534 has 4 divisors (see below), whose sum is σ = 98916804. Its totient is φ = 32972266.

The previous prime is 65944531. The next prime is 65944583. The reversal of 65944534 is 43544956.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65944531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16486132 + ... + 16486135.

It is an arithmetic number, because the mean of its divisors is an integer number (24729201).

Almost surely, 2^65944534 is an apocalyptic number.

65944534 is a deficient number, since it is larger than the sum of its proper divisors (32972270).

65944534 is a wasteful number, since it uses less digits than its factorization.

65944534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32972269.

The product of its digits is 259200, while the sum is 40.

The square root of 65944534 is about 8120.6239908027. The cubic root of 65944534 is about 404.0107625470.

The spelling of 65944534 in words is "sixty-five million, nine hundred forty-four thousand, five hundred thirty-four".