65117489 has 2 divisors, whose sum is σ = 65117490. Its totient is φ = 65117488.

The previous prime is 65117483. The next prime is 65117509. The reversal of 65117489 is 98471156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47334400 + 17783089 = 6880^2 + 4217^2 .

It is a cyclic number.

It is not a de Polignac number, because 65117489 - 2¹² = 65113393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65117483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32558744 + 32558745.

It is an arithmetic number, because the mean of its divisors is an integer number (32558745).

Almost surely, 2^65117489 is an apocalyptic number.

It is an amenable number.

65117489 is a deficient number, since it is larger than the sum of its proper divisors (1).

65117489 is an equidigital number, since it uses as much as digits as its factorization.

65117489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 65117489 is about 8069.5408171717. The cubic root of 65117489 is about 402.3146818665.

The spelling of 65117489 in words is "sixty-five million, one hundred seventeen thousand, four hundred eighty-nine".