65473881 has 8 divisors (see below), whose sum is σ = 95234784. Its totient is φ = 39681120.

The previous prime is 65473879. The next prime is 65473883. The reversal of 65473881 is 18837456.

It is an interprime number because it is at equal distance from previous prime (65473879) and next prime (65473883).

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

It is not a de Polignac number, because 65473881 - 2¹ = 65473879 is a prime.

It is a super-2 number, since 2×65473881² = 8573658186404322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65473883) 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, 991996 + ... + 992061.

It is an arithmetic number, because the mean of its divisors is an integer number (11904348).

Almost surely, 2^65473881 is an apocalyptic number.

It is an amenable number.

65473881 is a deficient number, since it is larger than the sum of its proper divisors (29760903).

65473881 is a wasteful number, since it uses less digits than its factorization.

65473881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984071.

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

The square root of 65473881 is about 8091.5932300135. The cubic root of 65473881 is about 403.0473111994.

The spelling of 65473881 in words is "sixty-five million, four hundred seventy-three thousand, eight hundred eighty-one".