65363989 has 2 divisors, whose sum is σ = 65363990. Its totient is φ = 65363988.

The previous prime is 65363983. The next prime is 65364011. The reversal of 65363989 is 98936356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35497764 + 29866225 = 5958^2 + 5465^2 .

It is a cyclic number.

It is not a de Polignac number, because 65363989 - 2⁵ = 65363957 is a prime.

It is a super-3 number, since 3×65363989³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65363983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32681994 + 32681995.

It is an arithmetic number, because the mean of its divisors is an integer number (32681995).

Almost surely, 2^65363989 is an apocalyptic number.

It is an amenable number.

65363989 is a deficient number, since it is larger than the sum of its proper divisors (1).

65363989 is an equidigital number, since it uses as much as digits as its factorization.

65363989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 49.

The square root of 65363989 is about 8084.7998738373. The cubic root of 65363989 is about 402.8216920800.

The spelling of 65363989 in words is "sixty-five million, three hundred sixty-three thousand, nine hundred eighty-nine".