84851015 has 4 divisors (see below), whose sum is σ = 101821224. Its totient is φ = 67880808.

The previous prime is 84850973. The next prime is 84851033. The reversal of 84851015 is 51015848.

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 84851015 - 2⁶ = 84850951 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 8485097 + ... + 8485106.

It is an arithmetic number, because the mean of its divisors is an integer number (25455306).

Almost surely, 2^84851015 is an apocalyptic number.

84851015 is a deficient number, since it is larger than the sum of its proper divisors (16970209).

84851015 is a wasteful number, since it uses less digits than its factorization.

84851015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16970208.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 84851015 is about 9211.4610676049. The cubic root of 84851015 is about 439.4259300531.

The spelling of 84851015 in words is "eighty-four million, eight hundred fifty-one thousand, fifteen".