87706079 has 4 divisors (see below), whose sum is σ = 87835176. Its totient is φ = 87576984.

The previous prime is 87706057. The next prime is 87706127. The reversal of 87706079 is 97060778.

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 87706079 - 2⁸ = 87705823 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 (87706039) 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, 63524 + ... + 64889.

It is an arithmetic number, because the mean of its divisors is an integer number (21958794).

Almost surely, 2^87706079 is an apocalyptic number.

87706079 is a deficient number, since it is larger than the sum of its proper divisors (129097).

87706079 is a wasteful number, since it uses less digits than its factorization.

87706079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129096.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 87706079 is about 9365.1523746280. The cubic root of 87706079 is about 444.3002578369.

The spelling of 87706079 in words is "eighty-seven million, seven hundred six thousand, seventy-nine".