70855867 has 2 divisors, whose sum is σ = 70855868. Its totient is φ = 70855866.

The previous prime is 70855861. The next prime is 70855871. The reversal of 70855867 is 76855807.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70855867 - 2¹¹ = 70853819 is a prime.

It is not a weakly prime, because it can be changed into another prime (70855861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35427933 + 35427934.

It is an arithmetic number, because the mean of its divisors is an integer number (35427934).

Almost surely, 2^70855867 is an apocalyptic number.

70855867 is a deficient number, since it is larger than the sum of its proper divisors (1).

70855867 is an equidigital number, since it uses as much as digits as its factorization.

70855867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 70855867 is about 8417.5927081322. The cubic root of 70855867 is about 413.8013839549.

The spelling of 70855867 in words is "seventy million, eight hundred fifty-five thousand, eight hundred sixty-seven".