70712839 has 2 divisors, whose sum is σ = 70712840. Its totient is φ = 70712838.

The previous prime is 70712819. The next prime is 70712849. The reversal of 70712839 is 93821707.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70712839 - 2²³ = 62324231 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70712798 and 70712807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70712819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35356419 + 35356420.

It is an arithmetic number, because the mean of its divisors is an integer number (35356420).

Almost surely, 2^70712839 is an apocalyptic number.

70712839 is a deficient number, since it is larger than the sum of its proper divisors (1).

70712839 is an equidigital number, since it uses as much as digits as its factorization.

70712839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 70712839 is about 8409.0926383291. The cubic root of 70712839 is about 413.5227664607.

The spelling of 70712839 in words is "seventy million, seven hundred twelve thousand, eight hundred thirty-nine".