65467987 has 4 divisors (see below), whose sum is σ = 70504000. Its totient is φ = 60431976.

The previous prime is 65467981. The next prime is 65467999. The reversal of 65467987 is 78976456.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 65467987 - 2⁷ = 65467859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65467981) 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, 2517987 + ... + 2518012.

It is an arithmetic number, because the mean of its divisors is an integer number (17626000).

Almost surely, 2^65467987 is an apocalyptic number.

65467987 is a deficient number, since it is larger than the sum of its proper divisors (5036013).

65467987 is a wasteful number, since it uses less digits than its factorization.

65467987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036012.

The product of its digits is 2540160, while the sum is 52.

The square root of 65467987 is about 8091.2290166575. The cubic root of 65467987 is about 403.0352166455.

The spelling of 65467987 in words is "sixty-five million, four hundred sixty-seven thousand, nine hundred eighty-seven".