65442571 has 8 divisors (see below), whose sum is σ = 69800400. Its totient is φ = 61141248.

The previous prime is 65442551. The next prime is 65442583. The reversal of 65442571 is 17524456.

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

It is not a de Polignac number, because 65442571 - 2⁵ = 65442539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65442551) 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, 11721 + ... + 16378.

It is an arithmetic number, because the mean of its divisors is an integer number (8725050).

Almost surely, 2^65442571 is an apocalyptic number.

65442571 is a deficient number, since it is larger than the sum of its proper divisors (4357829).

65442571 is a wasteful number, since it uses less digits than its factorization.

65442571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28253.

The product of its digits is 33600, while the sum is 34.

The square root of 65442571 is about 8089.6582746121. The cubic root of 65442571 is about 402.9830544137.

The spelling of 65442571 in words is "sixty-five million, four hundred forty-two thousand, five hundred seventy-one".