70607993 has 2 divisors, whose sum is σ = 70607994. Its totient is φ = 70607992.

The previous prime is 70607981. The next prime is 70608023. The reversal of 70607993 is 39970607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70425664 + 182329 = 8392^2 + 427^2 .

It is a cyclic number.

It is not a de Polignac number, because 70607993 - 2⁸ = 70607737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70607993.

It is not a weakly prime, because it can be changed into another prime (70607293) 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, 35303996 + 35303997.

It is an arithmetic number, because the mean of its divisors is an integer number (35303997).

Almost surely, 2^70607993 is an apocalyptic number.

It is an amenable number.

70607993 is a deficient number, since it is larger than the sum of its proper divisors (1).

70607993 is an equidigital number, since it uses as much as digits as its factorization.

70607993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 70607993 is about 8402.8562405887. The cubic root of 70607993 is about 413.3182884887.

The spelling of 70607993 in words is "seventy million, six hundred seven thousand, nine hundred ninety-three".