86783506 has 4 divisors (see below), whose sum is σ = 130175262. Its totient is φ = 43391752.

The previous prime is 86783497. The next prime is 86783509. The reversal of 86783506 is 60538768.

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

It can be written as a sum of positive squares in only one way, i.e., 86657481 + 126025 = 9309^2 + 355^2 .

It is not an unprimeable number, because it can be changed into a prime (86783509) 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 as a sum of consecutive naturals, namely, 21695875 + ... + 21695878.

Almost surely, 2^86783506 is an apocalyptic number.

86783506 is a deficient number, since it is larger than the sum of its proper divisors (43391756).

86783506 is a wasteful number, since it uses less digits than its factorization.

86783506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43391755.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 86783506 is about 9315.7665277743. The cubic root of 86783506 is about 442.7369108127.

The spelling of 86783506 in words is "eighty-six million, seven hundred eighty-three thousand, five hundred six".