3520975 has 6 divisors (see below), whose sum is σ = 4366040. Its totient is φ = 2816760.

The previous prime is 3520973. The next prime is 3520987. The reversal of 3520975 is 5790253.

It is a happy number.

It is not a de Polignac number, because 3520975 - 2¹ = 3520973 is a prime.

3520975 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70395 + ... + 70444.

Almost surely, 2^3520975 is an apocalyptic number.

3520975 is a deficient number, since it is larger than the sum of its proper divisors (845065).

3520975 is a wasteful number, since it uses less digits than its factorization.

3520975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140849 (or 140844 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 3520975 is about 1876.4261243119. The cubic root of 3520975 is about 152.1321421288.

The spelling of 3520975 in words is "three million, five hundred twenty thousand, nine hundred seventy-five".