65234989 has 2 divisors, whose sum is σ = 65234990. Its totient is φ = 65234988.

The previous prime is 65234971. The next prime is 65235017. The reversal of 65234989 is 98943256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62884900 + 2350089 = 7930^2 + 1533^2 .

It is a cyclic number.

It is not a de Polignac number, because 65234989 - 2⁵ = 65234957 is a prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65234909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32617494 + 32617495.

It is an arithmetic number, because the mean of its divisors is an integer number (32617495).

Almost surely, 2^65234989 is an apocalyptic number.

It is an amenable number.

65234989 is a deficient number, since it is larger than the sum of its proper divisors (1).

65234989 is an equidigital number, since it uses as much as digits as its factorization.

65234989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 65234989 is about 8076.8179996828. The cubic root of 65234989 is about 402.5565194605.

The spelling of 65234989 in words is "sixty-five million, two hundred thirty-four thousand, nine hundred eighty-nine".