86743945 has 8 divisors (see below), whose sum is σ = 110215944. Its totient is φ = 65313024.

The previous prime is 86743933. The next prime is 86743957. The reversal of 86743945 is 54934768.

It is an interprime number because it is at equal distance from previous prime (86743933) and next prime (86743957).

It can be written as a sum of positive squares in 4 ways, for example, as 3952144 + 82791801 = 1988^2 + 9099^2 .

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 86743945 - 2¹⁷ = 86612873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86743895 and 86743904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510174 + ... + 510343.

It is an arithmetic number, because the mean of its divisors is an integer number (13776993).

Almost surely, 2^86743945 is an apocalyptic number.

86743945 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

86743945 is a deficient number, since it is larger than the sum of its proper divisors (23471999).

86743945 is a wasteful number, since it uses less digits than its factorization.

86743945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020539.

The product of its digits is 725760, while the sum is 46.

The square root of 86743945 is about 9313.6429499955. The cubic root of 86743945 is about 442.6696254575.

The spelling of 86743945 in words is "eighty-six million, seven hundred forty-three thousand, nine hundred forty-five".