84847864 has 8 divisors (see below), whose sum is σ = 159089760. Its totient is φ = 42423928.

The previous prime is 84847813. The next prime is 84847871. The reversal of 84847864 is 46874848.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5302984 + ... + 5302999.

It is an arithmetic number, because the mean of its divisors is an integer number (19886220).

Almost surely, 2^84847864 is an apocalyptic number.

It is an amenable number.

84847864 is a deficient number, since it is larger than the sum of its proper divisors (74241896).

84847864 is a wasteful number, since it uses less digits than its factorization.

84847864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605989 (or 10605985 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 49.

The square root of 84847864 is about 9211.2900290893. The cubic root of 84847864 is about 439.4204905258.

The spelling of 84847864 in words is "eighty-four million, eight hundred forty-seven thousand, eight hundred sixty-four".