84672277 has 2 divisors, whose sum is σ = 84672278. Its totient is φ = 84672276.

The previous prime is 84672241. The next prime is 84672281. The reversal of 84672277 is 77227648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83887281 + 784996 = 9159^2 + 886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84672277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84612277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42336138 + 42336139.

It is an arithmetic number, because the mean of its divisors is an integer number (42336139).

Almost surely, 2^84672277 is an apocalyptic number.

It is an amenable number.

84672277 is a deficient number, since it is larger than the sum of its proper divisors (1).

84672277 is an equidigital number, since it uses as much as digits as its factorization.

84672277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 43.

The square root of 84672277 is about 9201.7540175773. The cubic root of 84672277 is about 439.1171640513.

The spelling of 84672277 in words is "eighty-four million, six hundred seventy-two thousand, two hundred seventy-seven".