84857648 has 20 divisors (see below), whose sum is σ = 173065560. Its totient is φ = 40195584.

The previous prime is 84857639. The next prime is 84857657. The reversal of 84857648 is 84675848.

It is an interprime number because it is at equal distance from previous prime (84857639) and next prime (84857657).

It is a junction number, because it is equal to n+sod(n) for n = 84857596 and 84857605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139265 + ... + 139872.

It is an arithmetic number, because the mean of its divisors is an integer number (8653278).

Almost surely, 2^84857648 is an apocalyptic number.

It is an amenable number.

84857648 is an abundant number, since it is smaller than the sum of its proper divisors (88207912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84857648 is a wasteful number, since it uses less digits than its factorization.

84857648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279164 (or 279158 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The square root of 84857648 is about 9211.8211011721. The cubic root of 84857648 is about 439.4373800684.

The spelling of 84857648 in words is "eighty-four million, eight hundred fifty-seven thousand, six hundred forty-eight".