70937891 has 2 divisors, whose sum is σ = 70937892. Its totient is φ = 70937890.

The previous prime is 70937873. The next prime is 70937921. The reversal of 70937891 is 19873907.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70937891 - 2¹⁴ = 70921507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70937291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35468945 + 35468946.

It is an arithmetic number, because the mean of its divisors is an integer number (35468946).

Almost surely, 2^70937891 is an apocalyptic number.

70937891 is a deficient number, since it is larger than the sum of its proper divisors (1).

70937891 is an equidigital number, since it uses as much as digits as its factorization.

70937891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 70937891 is about 8422.4634757297. The cubic root of 70937891 is about 413.9609969713.

The spelling of 70937891 in words is "seventy million, nine hundred thirty-seven thousand, eight hundred ninety-one".