65693544 has 64 divisors (see below), whose sum is σ = 189235200. Its totient is φ = 18615744.

The previous prime is 65693539. The next prime is 65693561. The reversal of 65693544 is 44539656.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 65693496 and 65693505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19797 + ... + 22875.

It is an arithmetic number, because the mean of its divisors is an integer number (2956800).

Almost surely, 2^65693544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65693544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94617600).

65693544 is an abundant number, since it is smaller than the sum of its proper divisors (123541656).

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

65693544 is a wasteful number, since it uses less digits than its factorization.

65693544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222 (or 3218 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The square root of 65693544 is about 8105.1553964128. The cubic root of 65693544 is about 403.4975454707.

The spelling of 65693544 in words is "sixty-five million, six hundred ninety-three thousand, five hundred forty-four".