86978735 has 4 divisors (see below), whose sum is σ = 104374488. Its totient is φ = 69582984.

The previous prime is 86978719. The next prime is 86978747. The reversal of 86978735 is 53787968.

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 86978735 - 2⁴ = 86978719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8697869 + ... + 8697878.

It is an arithmetic number, because the mean of its divisors is an integer number (26093622).

Almost surely, 2^86978735 is an apocalyptic number.

86978735 is a deficient number, since it is larger than the sum of its proper divisors (17395753).

86978735 is a wasteful number, since it uses less digits than its factorization.

86978735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17395752.

The product of its digits is 2540160, while the sum is 53.

The square root of 86978735 is about 9326.2390597711. The cubic root of 86978735 is about 443.0686572246.

The spelling of 86978735 in words is "eighty-six million, nine hundred seventy-eight thousand, seven hundred thirty-five".