65212839 has 6 divisors (see below), whose sum is σ = 94196336. Its totient is φ = 43475220.

The previous prime is 65212817. The next prime is 65212859. The reversal of 65212839 is 93821256.

It is not a de Polignac number, because 65212839 - 2⁷ = 65212711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65212859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3622927 + ... + 3622944.

Almost surely, 2^65212839 is an apocalyptic number.

65212839 is a deficient number, since it is larger than the sum of its proper divisors (28983497).

65212839 is a wasteful number, since it uses less digits than its factorization.

65212839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7245877 (or 7245874 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 65212839 is about 8075.4466749524. The cubic root of 65212839 is about 402.5109527259.

The spelling of 65212839 in words is "sixty-five million, two hundred twelve thousand, eight hundred thirty-nine".