870415871 has 4 divisors (see below), whose sum is σ = 937370952. Its totient is φ = 803460792.

The previous prime is 870415867. The next prime is 870415877. The reversal of 870415871 is 178514078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 870415871 - 2² = 870415867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870415877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33477521 + ... + 33477546.

It is an arithmetic number, because the mean of its divisors is an integer number (234342738).

Almost surely, 2^870415871 is an apocalyptic number.

870415871 is a deficient number, since it is larger than the sum of its proper divisors (66955081).

870415871 is a wasteful number, since it uses less digits than its factorization.

870415871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66955080.

The product of its (nonzero) digits is 62720, while the sum is 41.

The square root of 870415871 is about 29502.8112389311. The cubic root of 870415871 is about 954.7923567455.

The spelling of 870415871 in words is "eight hundred seventy million, four hundred fifteen thousand, eight hundred seventy-one".