65319457 has 8 divisors (see below), whose sum is σ = 79042176. Its totient is φ = 52694592.

The previous prime is 65319433. The next prime is 65319523. The reversal of 65319457 is 75491356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65319457 - 2¹¹ = 65317409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65319157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274333 + ... + 274570.

It is an arithmetic number, because the mean of its divisors is an integer number (9880272).

Almost surely, 2^65319457 is an apocalyptic number.

It is an amenable number.

65319457 is a deficient number, since it is larger than the sum of its proper divisors (13722719).

65319457 is a wasteful number, since it uses less digits than its factorization.

65319457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548927.

The product of its digits is 113400, while the sum is 40.

The square root of 65319457 is about 8082.0453475590. The cubic root of 65319457 is about 402.7301914888.

The spelling of 65319457 in words is "sixty-five million, three hundred nineteen thousand, four hundred fifty-seven".