84487651 has 2 divisors, whose sum is σ = 84487652. Its totient is φ = 84487650.

The previous prime is 84487633. The next prime is 84487691. The reversal of 84487651 is 15678448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84487651 - 2⁷ = 84487523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84487598 and 84487607.

It is not a weakly prime, because it can be changed into another prime (84487621) 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 as a sum of consecutive naturals, namely, 42243825 + 42243826.

It is an arithmetic number, because the mean of its divisors is an integer number (42243826).

Almost surely, 2^84487651 is an apocalyptic number.

84487651 is a deficient number, since it is larger than the sum of its proper divisors (1).

84487651 is an equidigital number, since it uses as much as digits as its factorization.

84487651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 84487651 is about 9191.7164338332. The cubic root of 84487651 is about 438.7977700873.

The spelling of 84487651 in words is "eighty-four million, four hundred eighty-seven thousand, six hundred fifty-one".