87797877 has 48 divisors (see below), whose sum is σ = 135457920. Its totient is φ = 50305024.

The previous prime is 87797869. The next prime is 87797881. The reversal of 87797877 is 77879778.

It is not a de Polignac number, because 87797877 - 2³ = 87797869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87797877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87797867) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 986449 + ... + 986537.

It is an arithmetic number, because the mean of its divisors is an integer number (2822040).

Almost surely, 2^87797877 is an apocalyptic number.

87797877 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

87797877 is a deficient number, since it is larger than the sum of its proper divisors (47660043).

87797877 is a wasteful number, since it uses less digits than its factorization.

87797877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 161 counting only the distinct ones).

The product of its digits is 9680832, while the sum is 60.

The square root of 87797877 is about 9370.0521343267. The cubic root of 87797877 is about 444.4552134729.

The spelling of 87797877 in words is "eighty-seven million, seven hundred ninety-seven thousand, eight hundred seventy-seven".