870504819 has 4 divisors (see below), whose sum is σ = 1160673096. Its totient is φ = 580336544.

The previous prime is 870504797. The next prime is 870504823. The reversal of 870504819 is 918405078.

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 870504819 - 2⁵ = 870504787 is a prime.

It is a super-2 number, since 2×870504819² = 1515557279804445522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (870504889) 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, 145084134 + ... + 145084139.

It is an arithmetic number, because the mean of its divisors is an integer number (290168274).

Almost surely, 2^870504819 is an apocalyptic number.

870504819 is a deficient number, since it is larger than the sum of its proper divisors (290168277).

870504819 is a wasteful number, since it uses less digits than its factorization.

870504819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290168276.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 870504819 is about 29504.3186499875. The cubic root of 870504819 is about 954.8248791219.

The spelling of 870504819 in words is "eight hundred seventy million, five hundred four thousand, eight hundred nineteen".