87077547 has 12 divisors (see below), whose sum is σ = 126432904. Its totient is φ = 57749760.

The previous prime is 87077531. The next prime is 87077591. The reversal of 87077547 is 74577078.

It is a happy number.

It is not a de Polignac number, because 87077547 - 2⁴ = 87077531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87077527) 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, 23329 + ... + 26802.

Almost surely, 2^87077547 is an apocalyptic number.

87077547 is a deficient number, since it is larger than the sum of its proper divisors (39355357).

87077547 is a wasteful number, since it uses less digits than its factorization.

87077547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50330 (or 50327 counting only the distinct ones).

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

The square root of 87077547 is about 9331.5350827182. The cubic root of 87077547 is about 443.2363761186.

The spelling of 87077547 in words is "eighty-seven million, seventy-seven thousand, five hundred forty-seven".