87296779 has 4 divisors (see below), whose sum is σ = 88599784. Its totient is φ = 85993776.

The previous prime is 87296761. The next prime is 87296789. The reversal of 87296779 is 97769278.

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 87296779 - 2¹¹ = 87294731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87296789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651402 + ... + 651535.

It is an arithmetic number, because the mean of its divisors is an integer number (22149946).

Almost surely, 2^87296779 is an apocalyptic number.

87296779 is a deficient number, since it is larger than the sum of its proper divisors (1303005).

87296779 is a wasteful number, since it uses less digits than its factorization.

87296779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303004.

The product of its digits is 2667168, while the sum is 55.

The square root of 87296779 is about 9343.2745330532. The cubic root of 87296779 is about 443.6080378000.

The spelling of 87296779 in words is "eighty-seven million, two hundred ninety-six thousand, seven hundred seventy-nine".