65442671 has 8 divisors (see below), whose sum is σ = 74983200. Its totient is φ = 55950048.

The previous prime is 65442649. The next prime is 65442701. The reversal of 65442671 is 17624456.

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

It is not a de Polignac number, because 65442671 - 2⁶ = 65442607 is a prime.

It is a super-2 number, since 2×65442671² = 8565486375228482, which contains 22 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 (65442071) 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 7 ways as a sum of consecutive naturals, for example, 8996 + ... + 14553.

It is an arithmetic number, because the mean of its divisors is an integer number (9372900).

Almost surely, 2^65442671 is an apocalyptic number.

65442671 is a deficient number, since it is larger than the sum of its proper divisors (9540529).

65442671 is a wasteful number, since it uses less digits than its factorization.

65442671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23953.

The product of its digits is 40320, while the sum is 35.

The square root of 65442671 is about 8089.6644553405. The cubic root of 65442671 is about 402.9832596740.

The spelling of 65442671 in words is "sixty-five million, four hundred forty-two thousand, six hundred seventy-one".