870001007 has 2 divisors, whose sum is σ = 870001008. Its totient is φ = 870001006.

The previous prime is 870001003. The next prime is 870001021. The reversal of 870001007 is 700100078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 870001007 - 2² = 870001003 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870001003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435000503 + 435000504.

It is an arithmetic number, because the mean of its divisors is an integer number (435000504).

Almost surely, 2^870001007 is an apocalyptic number.

870001007 is a deficient number, since it is larger than the sum of its proper divisors (1).

870001007 is an equidigital number, since it uses as much as digits as its factorization.

870001007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 870001007 is about 29495.7794777490. The cubic root of 870001007 is about 954.6406392588.

The spelling of 870001007 in words is "eight hundred seventy million, one thousand, seven".