65487947 has 8 divisors (see below), whose sum is σ = 76669152. Its totient is φ = 54763200.

The previous prime is 65487899. The next prime is 65487949. The reversal of 65487947 is 74978456.

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

It is a cyclic number.

It is not a de Polignac number, because 65487947 - 2⁸ = 65487691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65487895 and 65487904.

It is not an unprimeable number, because it can be changed into a prime (65487949) 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, 113804 + ... + 114377.

It is an arithmetic number, because the mean of its divisors is an integer number (9583644).

Almost surely, 2^65487947 is an apocalyptic number.

65487947 is a deficient number, since it is larger than the sum of its proper divisors (11181205).

65487947 is a wasteful number, since it uses less digits than its factorization.

65487947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228229.

The product of its digits is 1693440, while the sum is 50.

The square root of 65487947 is about 8092.4623570332. The cubic root of 65487947 is about 403.0761718557.

The spelling of 65487947 in words is "sixty-five million, four hundred eighty-seven thousand, nine hundred forty-seven".