70565039 has 2 divisors, whose sum is σ = 70565040. Its totient is φ = 70565038.

The previous prime is 70565009. The next prime is 70565057. The reversal of 70565039 is 93056507.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70565039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70565009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35282519 + 35282520.

It is an arithmetic number, because the mean of its divisors is an integer number (35282520).

Almost surely, 2^70565039 is an apocalyptic number.

70565039 is a deficient number, since it is larger than the sum of its proper divisors (1).

70565039 is an equidigital number, since it uses as much as digits as its factorization.

70565039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 70565039 is about 8400.2999351214. The cubic root of 70565039 is about 413.2344581538.

The spelling of 70565039 in words is "seventy million, five hundred sixty-five thousand, thirty-nine".