86712977 has 8 divisors (see below), whose sum is σ = 94663464. Its totient is φ = 78945408.

The previous prime is 86712973. The next prime is 86713001. The reversal of 86712977 is 77921768.

It can be written as a sum of positive squares in 4 ways, for example, as 26122321 + 60590656 = 5111^2 + 7784^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86712977 - 2² = 86712973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86712973) 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 7 ways as a sum of consecutive naturals, for example, 44738 + ... + 46635.

It is an arithmetic number, because the mean of its divisors is an integer number (11832933).

Almost surely, 2^86712977 is an apocalyptic number.

It is an amenable number.

86712977 is a deficient number, since it is larger than the sum of its proper divisors (7950487).

86712977 is a wasteful number, since it uses less digits than its factorization.

86712977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91459.

The product of its digits is 296352, while the sum is 47.

The square root of 86712977 is about 9311.9802942231. The cubic root of 86712977 is about 442.6169408018.

The spelling of 86712977 in words is "eighty-six million, seven hundred twelve thousand, nine hundred seventy-seven".