8154985 has 16 divisors (see below), whose sum is σ = 10645776. Its totient is φ = 5971968.

The previous prime is 8154983. The next prime is 8155001. The reversal of 8154985 is 5894518.

It can be written as a sum of positive squares in 8 ways, for example, as 994009 + 7160976 = 997^2 + 2676^2 .

It is a 6-Lehmer number, since φ(8154985) divides (8154985-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 8154985 - 2¹ = 8154983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8154983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1849 + ... + 4441.

It is an arithmetic number, because the mean of its divisors is an integer number (665361).

Almost surely, 2^8154985 is an apocalyptic number.

8154985 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8154985 is a deficient number, since it is larger than the sum of its proper divisors (2490791).

8154985 is a wasteful number, since it uses less digits than its factorization.

8154985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652.

The product of its digits is 57600, while the sum is 40.

The square root of 8154985 is about 2855.6934359276. The cubic root of 8154985 is about 201.2832898906.

The spelling of 8154985 in words is "eight million, one hundred fifty-four thousand, nine hundred eighty-five".