65134639 has 2 divisors, whose sum is σ = 65134640. Its totient is φ = 65134638.

The previous prime is 65134613. The next prime is 65134651. The reversal of 65134639 is 93643156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65134639 - 2⁵ = 65134607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65134598 and 65134607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65134039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32567319 + 32567320.

It is an arithmetic number, because the mean of its divisors is an integer number (32567320).

Almost surely, 2^65134639 is an apocalyptic number.

65134639 is a deficient number, since it is larger than the sum of its proper divisors (1).

65134639 is an equidigital number, since it uses as much as digits as its factorization.

65134639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 37.

The square root of 65134639 is about 8070.6033851256. The cubic root of 65134639 is about 402.3499979865.

The spelling of 65134639 in words is "sixty-five million, one hundred thirty-four thousand, six hundred thirty-nine".