84776890 has 32 divisors (see below), whose sum is σ = 166852224. Its totient is φ = 30757440.

The previous prime is 84776863. The next prime is 84776893. The reversal of 84776890 is 9867748.

It is not an unprimeable number, because it can be changed into a prime (84776893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87187 + ... + 88153.

It is an arithmetic number, because the mean of its divisors is an integer number (5214132).

Almost surely, 2^84776890 is an apocalyptic number.

84776890 is a deficient number, since it is larger than the sum of its proper divisors (82075334).

84776890 is a wasteful number, since it uses less digits than its factorization.

84776890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782.

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

The square root of 84776890 is about 9207.4366682590. The cubic root of 84776890 is about 439.2979334045.

The spelling of 84776890 in words is "eighty-four million, seven hundred seventy-six thousand, eight hundred ninety".