70703993 has 2 divisors, whose sum is σ = 70703994. Its totient is φ = 70703992.

The previous prime is 70703989. The next prime is 70704019. The reversal of 70703993 is 39930707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56355049 + 14348944 = 7507^2 + 3788^2 .

It is a cyclic number.

It is not a de Polignac number, because 70703993 - 2² = 70703989 is a prime.

It is a super-2 number, since 2×70703993² = 9998109252288098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70703903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35351996 + 35351997.

It is an arithmetic number, because the mean of its divisors is an integer number (35351997).

Almost surely, 2^70703993 is an apocalyptic number.

It is an amenable number.

70703993 is a deficient number, since it is larger than the sum of its proper divisors (1).

70703993 is an equidigital number, since it uses as much as digits as its factorization.

70703993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 38.

The square root of 70703993 is about 8408.5666436082. The cubic root of 70703993 is about 413.5055221856.

The spelling of 70703993 in words is "seventy million, seven hundred three thousand, nine hundred ninety-three".