985770287 has 2 divisors, whose sum is σ = 985770288. Its totient is φ = 985770286.

The previous prime is 985770241. The next prime is 985770301. The reversal of 985770287 is 782077589.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 985770287 - 2⁸ = 985770031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985772287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492885143 + 492885144.

It is an arithmetic number, because the mean of its divisors is an integer number (492885144).

Almost surely, 2^985770287 is an apocalyptic number.

985770287 is a deficient number, since it is larger than the sum of its proper divisors (1).

985770287 is an equidigital number, since it uses as much as digits as its factorization.

985770287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 53.

The square root of 985770287 is about 31396.9789470261. The cubic root of 985770287 is about 995.2340844667.

The spelling of 985770287 in words is "nine hundred eighty-five million, seven hundred seventy thousand, two hundred eighty-seven".