87766679 has 16 divisors (see below), whose sum is σ = 117841920. Its totient is φ = 63128160.

The previous prime is 87766669. The next prime is 87766687. The reversal of 87766679 is 97666778.

It is a cyclic number.

It is not a de Polignac number, because 87766679 - 2⁴ = 87766663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87766639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42839 + ... + 44840.

It is an arithmetic number, because the mean of its divisors is an integer number (7365120).

Almost surely, 2^87766679 is an apocalyptic number.

87766679 is a deficient number, since it is larger than the sum of its proper divisors (30075241).

87766679 is a wasteful number, since it uses less digits than its factorization.

87766679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87710.

The product of its digits is 5334336, while the sum is 56.

The square root of 87766679 is about 9368.3872144569. The cubic root of 87766679 is about 444.4025631623.

Subtracting 87766679 from its reverse (97666778), we obtain a palindrome (9900099).

The spelling of 87766679 in words is "eighty-seven million, seven hundred sixty-six thousand, six hundred seventy-nine".