33720461 has 4 divisors (see below), whose sum is σ = 35186592. Its totient is φ = 32254332.

The previous prime is 33720437. The next prime is 33720487. The reversal of 33720461 is 16402733.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33720461 is a prime.

It is a super-2 number, since 2×33720461² = 2274138980105042, 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 33720461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33720361) 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, 733031 + ... + 733076.

It is an arithmetic number, because the mean of its divisors is an integer number (8796648).

Almost surely, 2^33720461 is an apocalyptic number.

It is an amenable number.

33720461 is a deficient number, since it is larger than the sum of its proper divisors (1466131).

33720461 is a wasteful number, since it uses less digits than its factorization.

33720461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466130.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 33720461 is about 5806.9321504560. The cubic root of 33720461 is about 323.0708947317.

The spelling of 33720461 in words is "thirty-three million, seven hundred twenty thousand, four hundred sixty-one".