3506725 has 6 divisors (see below), whose sum is σ = 4348370. Its totient is φ = 2805360.

The previous prime is 3506719. The next prime is 3506753. The reversal of 3506725 is 5276053.

It can be written as a sum of positive squares in 3 ways, for example, as 6084 + 3500641 = 78^2 + 1871^2 .

It is not a de Polignac number, because 3506725 - 2⁹ = 3506213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3506693 and 3506702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70110 + ... + 70159.

Almost surely, 2^3506725 is an apocalyptic number.

It is an amenable number.

3506725 is a deficient number, since it is larger than the sum of its proper divisors (841645).

3506725 is a wasteful number, since it uses less digits than its factorization.

3506725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140279 (or 140274 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 3506725 is about 1872.6251627061. The cubic root of 3506725 is about 151.9266295251.

The spelling of 3506725 in words is "three million, five hundred six thousand, seven hundred twenty-five".