33630505 has 16 divisors (see below), whose sum is σ = 44112384. Its totient is φ = 24503040.

The previous prime is 33630503. The next prime is 33630511. The reversal of 33630505 is 50503633.

It is not a de Polignac number, because 33630505 - 2¹ = 33630503 is a prime.

It is a super-2 number, since 2×33630505² = 2262021733110050, which contains 22 as substring.

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 33630505.

It is not an unprimeable number, because it can be changed into a prime (33630503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3747 + ... + 9016.

It is an arithmetic number, because the mean of its divisors is an integer number (2757024).

Almost surely, 2^33630505 is an apocalyptic number.

It is an amenable number.

33630505 is a deficient number, since it is larger than the sum of its proper divisors (10481879).

33630505 is a wasteful number, since it uses less digits than its factorization.

33630505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12816.

The product of its (nonzero) digits is 4050, while the sum is 25.

The square root of 33630505 is about 5799.1814077506. The cubic root of 33630505 is about 322.7833537162.

The spelling of 33630505 in words is "thirty-three million, six hundred thirty thousand, five hundred five".