87077567 has 4 divisors (see below), whose sum is σ = 87150336. Its totient is φ = 87004800.

The previous prime is 87077531. The next prime is 87077591. The reversal of 87077567 is 76577078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87077567 - 2⁶ = 87077503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87077527) 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, 34559 + ... + 36992.

It is an arithmetic number, because the mean of its divisors is an integer number (21787584).

Almost surely, 2^87077567 is an apocalyptic number.

87077567 is a deficient number, since it is larger than the sum of its proper divisors (72769).

87077567 is a wasteful number, since it uses less digits than its factorization.

87077567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72768.

The product of its (nonzero) digits is 576240, while the sum is 47.

The square root of 87077567 is about 9331.5361543532. The cubic root of 87077567 is about 443.2364100528.

The spelling of 87077567 in words is "eighty-seven million, seventy-seven thousand, five hundred sixty-seven".