65072571 has 4 divisors (see below), whose sum is σ = 86763432. Its totient is φ = 43381712.

The previous prime is 65072569. The next prime is 65072573. The reversal of 65072571 is 17527056.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (65072569) and next prime (65072573).

It is a cyclic number.

It is not a de Polignac number, because 65072571 - 2¹ = 65072569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65072573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10845426 + ... + 10845431.

It is an arithmetic number, because the mean of its divisors is an integer number (21690858).

Almost surely, 2^65072571 is an apocalyptic number.

65072571 is a deficient number, since it is larger than the sum of its proper divisors (21690861).

65072571 is a wasteful number, since it uses less digits than its factorization.

65072571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21690860.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 65072571 is about 8066.7571551399. The cubic root of 65072571 is about 402.2221551229. Note that the first 3 decimals are identical.

The spelling of 65072571 in words is "sixty-five million, seventy-two thousand, five hundred seventy-one".