87745756 has 12 divisors (see below), whose sum is σ = 175491568. Its totient is φ = 37605312.

The previous prime is 87745753. The next prime is 87745769. The reversal of 87745756 is 65754778.

It is a happy number.

87745756 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87745751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566861 + ... + 1566916.

Almost surely, 2^87745756 is an apocalyptic number.

It is an amenable number.

87745756 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87745756 is a wasteful number, since it uses less digits than its factorization.

87745756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133788 (or 3133786 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 49.

The square root of 87745756 is about 9367.2704668970. The cubic root of 87745756 is about 444.3672461380.

The spelling of 87745756 in words is "eighty-seven million, seven hundred forty-five thousand, seven hundred fifty-six".