70868839 has 2 divisors, whose sum is σ = 70868840. Its totient is φ = 70868838.

The previous prime is 70868827. The next prime is 70868843. The reversal of 70868839 is 93886807.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70868839 - 2⁵ = 70868807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70868792 and 70868801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70868849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35434419 + 35434420.

It is an arithmetic number, because the mean of its divisors is an integer number (35434420).

Almost surely, 2^70868839 is an apocalyptic number.

70868839 is a deficient number, since it is larger than the sum of its proper divisors (1).

70868839 is an equidigital number, since it uses as much as digits as its factorization.

70868839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 70868839 is about 8418.3632019532. The cubic root of 70868839 is about 413.8266347645.

The spelling of 70868839 in words is "seventy million, eight hundred sixty-eight thousand, eight hundred thirty-nine".