84890677 has 4 divisors (see below), whose sum is σ = 88581600. Its totient is φ = 81199756.

The previous prime is 84890669. The next prime is 84890681. The reversal of 84890677 is 77609848.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84890677 - 2³ = 84890669 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84890677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84890077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845427 + ... + 1845472.

It is an arithmetic number, because the mean of its divisors is an integer number (22145400).

Almost surely, 2^84890677 is an apocalyptic number.

It is an amenable number.

84890677 is a deficient number, since it is larger than the sum of its proper divisors (3690923).

84890677 is a wasteful number, since it uses less digits than its factorization.

84890677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690922.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 84890677 is about 9213.6136775969. The cubic root of 84890677 is about 439.4943864977.

The spelling of 84890677 in words is "eighty-four million, eight hundred ninety thousand, six hundred seventy-seven".