65722471 has 8 divisors (see below), whose sum is σ = 68315184. Its totient is φ = 63172800.

The previous prime is 65722469. The next prime is 65722487. The reversal of 65722471 is 17422756.

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 65722471 - 2¹ = 65722469 is a prime.

It is a super-3 number, since 3×65722471³ (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 (65722421) 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, 7630 + ... + 13771.

It is an arithmetic number, because the mean of its divisors is an integer number (8539398).

Almost surely, 2^65722471 is an apocalyptic number.

65722471 is a deficient number, since it is larger than the sum of its proper divisors (2592713).

65722471 is a wasteful number, since it uses less digits than its factorization.

65722471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21521.

The product of its digits is 23520, while the sum is 34.

The square root of 65722471 is about 8106.9396815321. The cubic root of 65722471 is about 403.5567611360.

The spelling of 65722471 in words is "sixty-five million, seven hundred twenty-two thousand, four hundred seventy-one".