65347881 has 8 divisors (see below), whose sum is σ = 92255904. Its totient is φ = 41002560.

The previous prime is 65347871. The next prime is 65347913. The reversal of 65347881 is 18874356.

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

It is not a de Polignac number, because 65347881 - 2⁹ = 65347369 is a prime.

It is a super-2 number, since 2×65347881² = 8540691102380322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65347861) 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, 640615 + ... + 640716.

It is an arithmetic number, because the mean of its divisors is an integer number (11531988).

Almost surely, 2^65347881 is an apocalyptic number.

It is an amenable number.

65347881 is a deficient number, since it is larger than the sum of its proper divisors (26908023).

65347881 is a wasteful number, since it uses less digits than its factorization.

65347881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281351.

The product of its digits is 161280, while the sum is 42.

The square root of 65347881 is about 8083.8036220581. The cubic root of 65347881 is about 402.7885995215.

The spelling of 65347881 in words is "sixty-five million, three hundred forty-seven thousand, eight hundred eighty-one".