68570987 has 2 divisors, whose sum is σ = 68570988. Its totient is φ = 68570986.

The previous prime is 68570959. The next prime is 68571023. The reversal of 68570987 is 78907586.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68570987 - 2¹² = 68566891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68570917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34285493 + 34285494.

It is an arithmetic number, because the mean of its divisors is an integer number (34285494).

Almost surely, 2^68570987 is an apocalyptic number.

68570987 is a deficient number, since it is larger than the sum of its proper divisors (1).

68570987 is an equidigital number, since it uses as much as digits as its factorization.

68570987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 68570987 is about 8280.7600496573. The cubic root of 68570987 is about 409.3047646497.

The spelling of 68570987 in words is "sixty-eight million, five hundred seventy thousand, nine hundred eighty-seven".