7867217085 has 32 divisors (see below), whose sum is σ = 15492368640. Its totient is φ = 3319792128.

The previous prime is 7867217053. The next prime is 7867217087. The reversal of 7867217085 is 5807127687.

It is not a de Polignac number, because 7867217085 - 2⁵ = 7867217053 is a prime.

It is a super-3 number, since 3×7867217085³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7867217087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2880400 + ... + 2883129.

It is an arithmetic number, because the mean of its divisors is an integer number (484136520).

Almost surely, 2^7867217085 is an apocalyptic number.

It is an amenable number.

7867217085 is a deficient number, since it is larger than the sum of its proper divisors (7625151555).

7867217085 is a wasteful number, since it uses less digits than its factorization.

7867217085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763557.

The product of its (nonzero) digits is 1317120, while the sum is 51.

The square root of 7867217085 is about 88697.3341482144. The cubic root of 7867217085 is about 1988.8729664495.

The spelling of 7867217085 in words is "seven billion, eight hundred sixty-seven million, two hundred seventeen thousand, eighty-five".