70885147 has 2 divisors, whose sum is σ = 70885148. Its totient is φ = 70885146.

The previous prime is 70885099. The next prime is 70885151. The reversal of 70885147 is 74158807.

It is a strong prime.

It is an emirp because it is prime and its reverse (74158807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70885147 - 2¹⁹ = 70360859 is a prime.

It is not a weakly prime, because it can be changed into another prime (70885247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35442573 + 35442574.

It is an arithmetic number, because the mean of its divisors is an integer number (35442574).

Almost surely, 2^70885147 is an apocalyptic number.

70885147 is a deficient number, since it is larger than the sum of its proper divisors (1).

70885147 is an equidigital number, since it uses as much as digits as its factorization.

70885147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 70885147 is about 8419.3317430780. The cubic root of 70885147 is about 413.8583749353.

The spelling of 70885147 in words is "seventy million, eight hundred eighty-five thousand, one hundred forty-seven".