70987093 has 2 divisors, whose sum is σ = 70987094. Its totient is φ = 70987092.

The previous prime is 70987057. The next prime is 70987123. The reversal of 70987093 is 39078907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70442449 + 544644 = 8393^2 + 738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70987093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70987003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35493546 + 35493547.

It is an arithmetic number, because the mean of its divisors is an integer number (35493547).

Almost surely, 2^70987093 is an apocalyptic number.

It is an amenable number.

70987093 is a deficient number, since it is larger than the sum of its proper divisors (1).

70987093 is an equidigital number, since it uses as much as digits as its factorization.

70987093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 70987093 is about 8425.3838488226. The cubic root of 70987093 is about 414.0566816213.

The spelling of 70987093 in words is "seventy million, nine hundred eighty-seven thousand, ninety-three".