3490506 has 32 divisors (see below), whose sum is σ = 7970880. Its totient is φ = 1131408.

The previous prime is 3490493. The next prime is 3490517. The reversal of 3490506 is 6050943.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 3490506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (249090).

Almost surely, 2^3490506 is an apocalyptic number.

3490506 is the 999-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3490506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3985440).

3490506 is an abundant number, since it is smaller than the sum of its proper divisors (4480374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3490506 is a wasteful number, since it uses less digits than its factorization.

3490506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3490506 is about 1868.2895921136. The cubic root of 3490506 is about 151.6920415352.

The spelling of 3490506 in words is "three million, four hundred ninety thousand, five hundred six".