65459987 has 2 divisors, whose sum is σ = 65459988. Its totient is φ = 65459986.

The previous prime is 65459983. The next prime is 65460023. The reversal of 65459987 is 78995456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65459987 - 2² = 65459983 is a prime.

It is not a weakly prime, because it can be changed into another prime (65459981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32729993 + 32729994.

It is an arithmetic number, because the mean of its divisors is an integer number (32729994).

Almost surely, 2^65459987 is an apocalyptic number.

65459987 is a deficient number, since it is larger than the sum of its proper divisors (1).

65459987 is an equidigital number, since it uses as much as digits as its factorization.

65459987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The square root of 65459987 is about 8090.7346390794. The cubic root of 65459987 is about 403.0187993948.

The spelling of 65459987 in words is "sixty-five million, four hundred fifty-nine thousand, nine hundred eighty-seven".