3081506 has 4 divisors (see below), whose sum is σ = 4622262. Its totient is φ = 1540752.

The previous prime is 3081503. The next prime is 3081523. The reversal of 3081506 is 6051803.

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., 3045025 + 36481 = 1745^2 + 191^2 .

It is not an unprimeable number, because it can be changed into a prime (3081503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770375 + ... + 770378.

Almost surely, 2^3081506 is an apocalyptic number.

3081506 is a deficient number, since it is larger than the sum of its proper divisors (1540756).

3081506 is a wasteful number, since it uses less digits than its factorization.

3081506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540755.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 3081506 is about 1755.4218866130. The cubic root of 3081506 is about 145.5194370258.

The spelling of 3081506 in words is "three million, eighty-one thousand, five hundred six".