864533387 has 2 divisors, whose sum is σ = 864533388. Its totient is φ = 864533386.

The previous prime is 864533381. The next prime is 864533393. The reversal of 864533387 is 783335468.

It is a balanced prime because it is at equal distance from previous prime (864533381) and next prime (864533393).

It is a cyclic number.

It is not a de Polignac number, because 864533387 - 2¹⁰ = 864532363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (864533381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432266693 + 432266694.

It is an arithmetic number, because the mean of its divisors is an integer number (432266694).

Almost surely, 2^864533387 is an apocalyptic number.

864533387 is a deficient number, since it is larger than the sum of its proper divisors (1).

864533387 is an equidigital number, since it uses as much as digits as its factorization.

864533387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 47.

The square root of 864533387 is about 29402.9486106411. The cubic root of 864533387 is about 952.6365860210.

The spelling of 864533387 in words is "eight hundred sixty-four million, five hundred thirty-three thousand, three hundred eighty-seven".