70603993 has 2 divisors, whose sum is σ = 70603994. Its totient is φ = 70603992.

The previous prime is 70603963. The next prime is 70604021. The reversal of 70603993 is 39930607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61889689 + 8714304 = 7867^2 + 2952^2 .

It is an emirp because it is prime and its reverse (39930607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70603993 - 2⁵ = 70603961 is a prime.

It is not a weakly prime, because it can be changed into another prime (70603963) 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, 35301996 + 35301997.

It is an arithmetic number, because the mean of its divisors is an integer number (35301997).

Almost surely, 2^70603993 is an apocalyptic number.

It is an amenable number.

70603993 is a deficient number, since it is larger than the sum of its proper divisors (1).

70603993 is an equidigital number, since it uses as much as digits as its factorization.

70603993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 70603993 is about 8402.6182229112. The cubic root of 70603993 is about 413.3104834027.

The spelling of 70603993 in words is "seventy million, six hundred three thousand, nine hundred ninety-three".