87500745 has 24 divisors (see below), whose sum is σ = 155770056. Its totient is φ = 45404928.

The previous prime is 87500741. The next prime is 87500753. The reversal of 87500745 is 54700578.

87500745 is a `hidden beast` number, since 87 + 500 + 74 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 45198729 + 42302016 = 6723^2 + 6504^2 .

It is not a de Polignac number, because 87500745 - 2² = 87500741 is a prime.

It is a super-3 number, since 3×87500745³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87500741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24612 + ... + 27941.

It is an arithmetic number, because the mean of its divisors is an integer number (6490419).

Almost surely, 2^87500745 is an apocalyptic number.

It is an amenable number.

87500745 is a deficient number, since it is larger than the sum of its proper divisors (68269311).

87500745 is a wasteful number, since it uses less digits than its factorization.

87500745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52601 (or 52598 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 87500745 is about 9354.1832887751. The cubic root of 87500745 is about 443.9532608458.

The spelling of 87500745 in words is "eighty-seven million, five hundred thousand, seven hundred forty-five".