69970687 has 2 divisors, whose sum is σ = 69970688. Its totient is φ = 69970686.

The previous prime is 69970633. The next prime is 69970709. The reversal of 69970687 is 78607996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69970687 - 2¹⁵ = 69937919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69974687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34985343 + 34985344.

It is an arithmetic number, because the mean of its divisors is an integer number (34985344).

Almost surely, 2^69970687 is an apocalyptic number.

69970687 is a deficient number, since it is larger than the sum of its proper divisors (1).

69970687 is an equidigital number, since it uses as much as digits as its factorization.

69970687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 69970687 is about 8364.8482950978. The cubic root of 69970687 is about 412.0709946938.

The spelling of 69970687 in words is "sixty-nine million, nine hundred seventy thousand, six hundred eighty-seven".