87797788 has 48 divisors (see below), whose sum is σ = 170614080. Its totient is φ = 39283200.

The previous prime is 87797783. The next prime is 87797791. The reversal of 87797788 is 88779778.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87797783) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 282153 + ... + 282463.

It is an arithmetic number, because the mean of its divisors is an integer number (3554460).

Almost surely, 2^87797788 is an apocalyptic number.

It is an amenable number.

87797788 is a deficient number, since it is larger than the sum of its proper divisors (82816292).

87797788 is a wasteful number, since it uses less digits than its factorization.

87797788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 476 counting only the distinct ones).

The product of its digits is 11063808, while the sum is 61.

The square root of 87797788 is about 9370.0473851523. The cubic root of 87797788 is about 444.4550632926.

The spelling of 87797788 in words is "eighty-seven million, seven hundred ninety-seven thousand, seven hundred eighty-eight".