70801993 has 2 divisors, whose sum is σ = 70801994. Its totient is φ = 70801992.

The previous prime is 70801921. The next prime is 70802003. The reversal of 70801993 is 39910807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41512249 + 29289744 = 6443^2 + 5412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70801993 is a prime.

It is not a weakly prime, because it can be changed into another prime (70807993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35400996 + 35400997.

It is an arithmetic number, because the mean of its divisors is an integer number (35400997).

Almost surely, 2^70801993 is an apocalyptic number.

It is an amenable number.

70801993 is a deficient number, since it is larger than the sum of its proper divisors (1).

70801993 is an equidigital number, since it uses as much as digits as its factorization.

70801993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 70801993 is about 8414.3920160639. The cubic root of 70801993 is about 413.6964818527.

The spelling of 70801993 in words is "seventy million, eight hundred one thousand, nine hundred ninety-three".