87797906 has 24 divisors (see below), whose sum is σ = 158486220. Its totient is φ = 36328992.

The previous prime is 87797891. The next prime is 87797951. The reversal of 87797906 is 60979778.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87590881 + 207025 = 9359^2 + 455^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12605 + ... + 18288.

Almost surely, 2^87797906 is an apocalyptic number.

87797906 is a deficient number, since it is larger than the sum of its proper divisors (70688314).

87797906 is a wasteful number, since it uses less digits than its factorization.

87797906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30938 (or 30931 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 87797906 is about 9370.0536818099. The cubic root of 87797906 is about 444.4552624080.

The spelling of 87797906 in words is "eighty-seven million, seven hundred ninety-seven thousand, nine hundred six".