70847873 has 2 divisors, whose sum is σ = 70847874. Its totient is φ = 70847872.

The previous prime is 70847869. The next prime is 70847879. The reversal of 70847873 is 37874807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66471409 + 4376464 = 8153^2 + 2092^2 .

It is a cyclic number.

It is not a de Polignac number, because 70847873 - 2² = 70847869 is a prime.

It is a super-2 number, since 2×70847873² = 10038842217248258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (70847879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35423936 + 35423937.

It is an arithmetic number, because the mean of its divisors is an integer number (35423937).

Almost surely, 2^70847873 is an apocalyptic number.

It is an amenable number.

70847873 is a deficient number, since it is larger than the sum of its proper divisors (1).

70847873 is an equidigital number, since it uses as much as digits as its factorization.

70847873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 70847873 is about 8417.1178558934. The cubic root of 70847873 is about 413.7858215989.

The spelling of 70847873 in words is "seventy million, eight hundred forty-seven thousand, eight hundred seventy-three".