86743457 has 4 divisors (see below), whose sum is σ = 88380180. Its totient is φ = 85106736.

The previous prime is 86743451. The next prime is 86743477. The reversal of 86743457 is 75434768.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34093921 + 52649536 = 5839^2 + 7256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86743457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86743451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818282 + ... + 818387.

It is an arithmetic number, because the mean of its divisors is an integer number (22095045).

Almost surely, 2^86743457 is an apocalyptic number.

It is an amenable number.

86743457 is a deficient number, since it is larger than the sum of its proper divisors (1636723).

86743457 is a wasteful number, since it uses less digits than its factorization.

86743457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636722.

The product of its digits is 564480, while the sum is 44.

The square root of 86743457 is about 9313.6167518317. The cubic root of 86743457 is about 442.6687953393.

The spelling of 86743457 in words is "eighty-six million, seven hundred forty-three thousand, four hundred fifty-seven".