65047987 has 2 divisors, whose sum is σ = 65047988. Its totient is φ = 65047986.

The previous prime is 65047937. The next prime is 65047991. The reversal of 65047987 is 78974056.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65047987 - 2¹⁹ = 64523699 is a prime.

It is a super-2 number, since 2×65047987² = 8462481225504338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65047937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32523993 + 32523994.

It is an arithmetic number, because the mean of its divisors is an integer number (32523994).

Almost surely, 2^65047987 is an apocalyptic number.

65047987 is a deficient number, since it is larger than the sum of its proper divisors (1).

65047987 is an equidigital number, since it uses as much as digits as its factorization.

65047987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 65047987 is about 8065.2332266339. The cubic root of 65047987 is about 402.1714964260.

The spelling of 65047987 in words is "sixty-five million, forty-seven thousand, nine hundred eighty-seven".