65887947 has 6 divisors (see below), whose sum is σ = 95171492. Its totient is φ = 43925292.

The previous prime is 65887901. The next prime is 65887951. The reversal of 65887947 is 74978856.

It is not a de Polignac number, because 65887947 - 2⁶ = 65887883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65887893 and 65887902.

It is not an unprimeable number, because it can be changed into a prime (65887147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3660433 + ... + 3660450.

Almost surely, 2^65887947 is an apocalyptic number.

65887947 is a deficient number, since it is larger than the sum of its proper divisors (29283545).

65887947 is a wasteful number, since it uses less digits than its factorization.

65887947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7320889 (or 7320886 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 65887947 is about 8117.1390896054. The cubic root of 65887947 is about 403.8951689414.

Subtracting 65887947 from its reverse (74978856), we obtain a palindrome (9090909).

It can be divided in two parts, 6588 and 7947, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 65887947 in words is "sixty-five million, eight hundred eighty-seven thousand, nine hundred forty-seven".