3491506 has 4 divisors (see below), whose sum is σ = 5237262. Its totient is φ = 1745752.

The previous prime is 3491491. The next prime is 3491533. The reversal of 3491506 is 6051943.

3491506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6051943 = 1549 ⋅3907.

It can be written as a sum of positive squares in only one way, i.e., 2859481 + 632025 = 1691^2 + 795^2 .

It is a super-4 number, since 4×3491506⁴ (a number of 27 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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, 872875 + ... + 872878.

Almost surely, 2^3491506 is an apocalyptic number.

3491506 is a deficient number, since it is larger than the sum of its proper divisors (1745756).

3491506 is a wasteful number, since it uses less digits than its factorization.

3491506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745755.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 3491506 is about 1868.5571974119. The cubic root of 3491506 is about 151.7065263079.

The spelling of 3491506 in words is "three million, four hundred ninety-one thousand, five hundred six".