65249471 has 8 divisors (see below), whose sum is σ = 75255840. Its totient is φ = 55414368.

The previous prime is 65249467. The next prime is 65249501. The reversal of 65249471 is 17494256.

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 65249471 - 2² = 65249467 is a prime.

It is a super-3 number, since 3×65249471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65243471) 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, 41996 + ... + 43521.

It is an arithmetic number, because the mean of its divisors is an integer number (9406980).

Almost surely, 2^65249471 is an apocalyptic number.

65249471 is a deficient number, since it is larger than the sum of its proper divisors (10006369).

65249471 is a wasteful number, since it uses less digits than its factorization.

65249471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85633.

The product of its digits is 60480, while the sum is 38.

The square root of 65249471 is about 8077.7144663574. The cubic root of 65249471 is about 402.5863060942.

The spelling of 65249471 in words is "sixty-five million, two hundred forty-nine thousand, four hundred seventy-one".