828695987 has 12 divisors (see below), whose sum is σ = 975612456. Its totient is φ = 701749440.

The previous prime is 828695953. The next prime is 828696019. The reversal of 828695987 is 789596828.

It is not a de Polignac number, because 828695987 - 2²⁰ = 827647411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (828695947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97814 + ... + 105947.

It is an arithmetic number, because the mean of its divisors is an integer number (81301038).

Almost surely, 2^828695987 is an apocalyptic number.

828695987 is a deficient number, since it is larger than the sum of its proper divisors (146916469).

828695987 is a wasteful number, since it uses less digits than its factorization.

828695987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203858 (or 203851 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 62.

The square root of 828695987 is about 28787.0802097052. The cubic root of 828695987 is about 939.2872169284.

The spelling of 828695987 in words is "eight hundred twenty-eight million, six hundred ninety-five thousand, nine hundred eighty-seven".