65493791 has 6 divisors (see below), whose sum is σ = 71989176. Its totient is φ = 59539700.

The previous prime is 65493781. The next prime is 65493797. The reversal of 65493791 is 19739456.

It is not a de Polignac number, because 65493791 - 2¹⁰ = 65492767 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65493797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270515 + ... + 270756.

It is an arithmetic number, because the mean of its divisors is an integer number (11998196).

Almost surely, 2^65493791 is an apocalyptic number.

65493791 is a deficient number, since it is larger than the sum of its proper divisors (6495385).

65493791 is a wasteful number, since it uses less digits than its factorization.

65493791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541293 (or 541282 counting only the distinct ones).

The product of its digits is 204120, while the sum is 44.

The square root of 65493791 is about 8092.8234257273. The cubic root of 65493791 is about 403.0881613754.

The spelling of 65493791 in words is "sixty-five million, four hundred ninety-three thousand, seven hundred ninety-one".