85146487 has 2 divisors, whose sum is σ = 85146488. Its totient is φ = 85146486.

The previous prime is 85146449. The next prime is 85146511. The reversal of 85146487 is 78464158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85146487 - 2⁷ = 85146359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85146587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42573243 + 42573244.

It is an arithmetic number, because the mean of its divisors is an integer number (42573244).

Almost surely, 2^85146487 is an apocalyptic number.

85146487 is a deficient number, since it is larger than the sum of its proper divisors (1).

85146487 is an equidigital number, since it uses as much as digits as its factorization.

85146487 is an evil number, because the sum of its binary digits is even.

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

The square root of 85146487 is about 9227.4854104463. The cubic root of 85146487 is about 439.9354020180.

The spelling of 85146487 in words is "eighty-five million, one hundred forty-six thousand, four hundred eighty-seven".