878771097 has 18 divisors (see below), whose sum is σ = 1326931242. Its totient is φ = 560372736.

The previous prime is 878771093. The next prime is 878771107. The reversal of 878771097 is 790177878.

It can be written as a sum of positive squares in only one way, i.e., 613602441 + 265168656 = 24771^2 + 16284^2 .

It is not a de Polignac number, because 878771097 - 2² = 878771093 is a prime.

It is not an unprimeable number, because it can be changed into a prime (878771093) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 87528 + ... + 97049.

Almost surely, 2^878771097 is an apocalyptic number.

It is an amenable number.

878771097 is a deficient number, since it is larger than the sum of its proper divisors (448160145).

878771097 is a wasteful number, since it uses less digits than its factorization.

878771097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184629 (or 184603 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 54.

The square root of 878771097 is about 29644.0735561090. The cubic root of 878771097 is about 957.8376885883.

The spelling of 878771097 in words is "eight hundred seventy-eight million, seven hundred seventy-one thousand, ninety-seven".