84651877 has 2 divisors, whose sum is σ = 84651878. Its totient is φ = 84651876.

The previous prime is 84651829. The next prime is 84651881. The reversal of 84651877 is 77815648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84621601 + 30276 = 9199^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 84651877 - 2¹⁵ = 84619109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84654877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42325938 + 42325939.

It is an arithmetic number, because the mean of its divisors is an integer number (42325939).

Almost surely, 2^84651877 is an apocalyptic number.

It is an amenable number.

84651877 is a deficient number, since it is larger than the sum of its proper divisors (1).

84651877 is an equidigital number, since it uses as much as digits as its factorization.

84651877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 46.

The square root of 84651877 is about 9200.6454664877. The cubic root of 84651877 is about 439.0818958778.

The spelling of 84651877 in words is "eighty-four million, six hundred fifty-one thousand, eight hundred seventy-seven".