3521307 has 8 divisors (see below), whose sum is σ = 4713984. Its totient is φ = 2338088.

The previous prime is 3521303. The next prime is 3521341. The reversal of 3521307 is 7031253.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3521307 - 2² = 3521303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3521303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1443 + ... + 3020.

It is an arithmetic number, because the mean of its divisors is an integer number (589248).

Almost surely, 2^3521307 is an apocalyptic number.

3521307 is a deficient number, since it is larger than the sum of its proper divisors (1192677).

3521307 is a wasteful number, since it uses less digits than its factorization.

3521307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 3521307 is about 1876.5145882726. The cubic root of 3521307 is about 152.1369235964.

It can be divided in two parts, 3521 and 307, that added together give a triangular number (3828 = T₈₇).

The spelling of 3521307 in words is "three million, five hundred twenty-one thousand, three hundred seven".