70646993 has 2 divisors, whose sum is σ = 70646994. Its totient is φ = 70646992.

The previous prime is 70646963. The next prime is 70646999. The reversal of 70646993 is 39964607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65480464 + 5166529 = 8092^2 + 2273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70646993 is a prime.

It is not a weakly prime, because it can be changed into another prime (70646999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35323496 + 35323497.

It is an arithmetic number, because the mean of its divisors is an integer number (35323497).

Almost surely, 2^70646993 is an apocalyptic number.

It is an amenable number.

70646993 is a deficient number, since it is larger than the sum of its proper divisors (1).

70646993 is an equidigital number, since it uses as much as digits as its factorization.

70646993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 70646993 is about 8405.1765597160. The cubic root of 70646993 is about 413.3943726337.

The spelling of 70646993 in words is "seventy million, six hundred forty-six thousand, nine hundred ninety-three".