772853985 has 24 divisors (see below), whose sum is σ = 1340476800. Its totient is φ = 411923232.

The previous prime is 772853969. The next prime is 772853987. The reversal of 772853985 is 589358277.

772853985 is a `hidden beast` number, since 7 + 7 + 28 + 539 + 85 = 666.

It is not a de Polignac number, because 772853985 - 2⁴ = 772853969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (772853987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79416 + ... + 88614.

It is an arithmetic number, because the mean of its divisors is an integer number (55853200).

Almost surely, 2^772853985 is an apocalyptic number.

It is an amenable number.

772853985 is a deficient number, since it is larger than the sum of its proper divisors (567622815).

772853985 is a wasteful number, since it uses less digits than its factorization.

772853985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11077 (or 11074 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The square root of 772853985 is about 27800.2515276391. The cubic root of 772853985 is about 917.6966581447.

The spelling of 772853985 in words is "seven hundred seventy-two million, eight hundred fifty-three thousand, nine hundred eighty-five".