87075747 has 12 divisors (see below), whose sum is σ = 137210424. Its totient is φ = 52773120.

The previous prime is 87075739. The next prime is 87075757. The reversal of 87075747 is 74757078.

It is a happy number.

87075747 is a `hidden beast` number, since 8 + 70 + 7 + 574 + 7 = 666.

It is not a de Polignac number, because 87075747 - 2³ = 87075739 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (87075707) 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 11 ways as a sum of consecutive naturals, for example, 439678 + ... + 439875.

It is an arithmetic number, because the mean of its divisors is an integer number (11434202).

Almost surely, 2^87075747 is an apocalyptic number.

87075747 is a deficient number, since it is larger than the sum of its proper divisors (50134677).

87075747 is a wasteful number, since it uses less digits than its factorization.

87075747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879570 (or 879567 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 45.

The square root of 87075747 is about 9331.4386350659. The cubic root of 87075747 is about 443.2333220172.

The spelling of 87075747 in words is "eighty-seven million, seventy-five thousand, seven hundred forty-seven".