3505997 has 8 divisors (see below), whose sum is σ = 3853920. Its totient is φ = 3162960.

The previous prime is 3505991. The next prime is 3506023. The reversal of 3505997 is 7995053.

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 3505997 - 2⁴ = 3505981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3505997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3505991) 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, 383 + ... + 2675.

It is an arithmetic number, because the mean of its divisors is an integer number (481740).

Almost surely, 2^3505997 is an apocalyptic number.

3505997 is the 1529-th pentagonal number.

It is an amenable number.

3505997 is a deficient number, since it is larger than the sum of its proper divisors (347923).

3505997 is a wasteful number, since it uses less digits than its factorization.

3505997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443.

The product of its (nonzero) digits is 42525, while the sum is 38.

The square root of 3505997 is about 1872.4307730862. The cubic root of 3505997 is about 151.9161154185.

The spelling of 3505997 in words is "three million, five hundred five thousand, nine hundred ninety-seven".