870807647 has 2 divisors, whose sum is σ = 870807648. Its totient is φ = 870807646.

The previous prime is 870807611. The next prime is 870807653. The reversal of 870807647 is 746708078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 870807647 - 2¹⁶ = 870742111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870807667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435403823 + 435403824.

It is an arithmetic number, because the mean of its divisors is an integer number (435403824).

Almost surely, 2^870807647 is an apocalyptic number.

870807647 is a deficient number, since it is larger than the sum of its proper divisors (1).

870807647 is an equidigital number, since it uses as much as digits as its factorization.

870807647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 47.

The square root of 870807647 is about 29509.4501304243. The cubic root of 870807647 is about 954.9355866024.

The spelling of 870807647 in words is "eight hundred seventy million, eight hundred seven thousand, six hundred forty-seven".