65494987 has 2 divisors, whose sum is σ = 65494988. Its totient is φ = 65494986.

The previous prime is 65494969. The next prime is 65494997. The reversal of 65494987 is 78949456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65494987 - 2¹¹ = 65492939 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (65494967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32747493 + 32747494.

It is an arithmetic number, because the mean of its divisors is an integer number (32747494).

Almost surely, 2^65494987 is an apocalyptic number.

65494987 is a deficient number, since it is larger than the sum of its proper divisors (1).

65494987 is an equidigital number, since it uses as much as digits as its factorization.

65494987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The square root of 65494987 is about 8092.8973180191. The cubic root of 65494987 is about 403.0906149948.

The spelling of 65494987 in words is "sixty-five million, four hundred ninety-four thousand, nine hundred eighty-seven".