87770767 has 6 divisors (see below), whose sum is σ = 100337784. Its totient is φ = 75210840.

The previous prime is 87770723. The next prime is 87770777. The reversal of 87770767 is 76707778.

It is not a de Polignac number, because 87770767 - 2¹⁵ = 87737999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87770767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87770707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23017 + ... + 26557.

It is an arithmetic number, because the mean of its divisors is an integer number (16722964).

Almost surely, 2^87770767 is an apocalyptic number.

87770767 is a deficient number, since it is larger than the sum of its proper divisors (12567017).

87770767 is an frugal number, since it uses more digits than its factorization.

87770767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089 (or 3548 counting only the distinct ones).

The product of its (nonzero) digits is 806736, while the sum is 49.

The square root of 87770767 is about 9368.6053924797. The cubic root of 87770767 is about 444.4094628555.

The spelling of 87770767 in words is "eighty-seven million, seven hundred seventy thousand, seven hundred sixty-seven".