3506731 has 4 divisors (see below), whose sum is σ = 3551200. Its totient is φ = 3462264.

The previous prime is 3506719. The next prime is 3506753. The reversal of 3506731 is 1376053.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1376053 = 7 ⋅196579.

It is a cyclic number.

It is not a de Polignac number, because 3506731 - 2¹⁹ = 2982443 is a prime.

It is a super-2 number, since 2×3506731² = 24594324612722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3506696 and 3506705.

It is not an unprimeable number, because it can be changed into a prime (3501731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22116 + ... + 22273.

It is an arithmetic number, because the mean of its divisors is an integer number (887800).

Almost surely, 2^3506731 is an apocalyptic number.

3506731 is a deficient number, since it is larger than the sum of its proper divisors (44469).

3506731 is an equidigital number, since it uses as much as digits as its factorization.

3506731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44468.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 3506731 is about 1872.6267647345. The cubic root of 3506731 is about 151.9267161738.

The spelling of 3506731 in words is "three million, five hundred six thousand, seven hundred thirty-one".