84877681 has 8 divisors (see below), whose sum is σ = 97082624. Its totient is φ = 72692640.

The previous prime is 84877669. The next prime is 84877691. The reversal of 84877681 is 18677848.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84877681 - 2¹¹ = 84875633 is a prime.

It is a super-2 number, since 2×84877681² = 14408441463875522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84877621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5701 + ... + 14221.

It is an arithmetic number, because the mean of its divisors is an integer number (12135328).

Almost surely, 2^84877681 is an apocalyptic number.

It is an amenable number.

84877681 is a deficient number, since it is larger than the sum of its proper divisors (12204943).

84877681 is a wasteful number, since it uses less digits than its factorization.

84877681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9951.

The product of its digits is 602112, while the sum is 49.

The square root of 84877681 is about 9212.9083898626. The cubic root of 84877681 is about 439.4719578057.

It can be divided in two parts, 84877 and 681, that added together give a palindrome (85558).

The spelling of 84877681 in words is "eighty-four million, eight hundred seventy-seven thousand, six hundred eighty-one".