86745994 has 4 divisors (see below), whose sum is σ = 130118994. Its totient is φ = 43372996.

The previous prime is 86745991. The next prime is 86746013. The reversal of 86745994 is 49954768.

It is a happy number.

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., 71182969 + 15563025 = 8437^2 + 3945^2 .

It is not an unprimeable number, because it can be changed into a prime (86745991) 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 as a sum of consecutive naturals, namely, 21686497 + ... + 21686500.

Almost surely, 2^86745994 is an apocalyptic number.

86745994 is a deficient number, since it is larger than the sum of its proper divisors (43373000).

86745994 is a wasteful number, since it uses less digits than its factorization.

86745994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43372999.

The product of its digits is 2177280, while the sum is 52.

The square root of 86745994 is about 9313.7529492681. The cubic root of 86745994 is about 442.6731108994.

The spelling of 86745994 in words is "eighty-six million, seven hundred forty-five thousand, nine hundred ninety-four".