33220977 has 4 divisors (see below), whose sum is σ = 44294640. Its totient is φ = 22147316.

The previous prime is 33220973. The next prime is 33220981. The reversal of 33220977 is 77902233.

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 an interprime number because it is at equal distance from previous prime (33220973) and next prime (33220981).

It is a cyclic number.

It is not a de Polignac number, because 33220977 - 2² = 33220973 is a prime.

It is a super-2 number, since 2×33220977² = 2207266625669058, which contains 22 as substring.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (33220973) 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, 5536827 + ... + 5536832.

It is an arithmetic number, because the mean of its divisors is an integer number (11073660).

Almost surely, 2^33220977 is an apocalyptic number.

It is an amenable number.

33220977 is a deficient number, since it is larger than the sum of its proper divisors (11073663).

33220977 is a wasteful number, since it uses less digits than its factorization.

33220977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073662.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 33220977 is about 5763.7641346606. The cubic root of 33220977 is about 321.4677916728.

The spelling of 33220977 in words is "thirty-three million, two hundred twenty thousand, nine hundred seventy-seven".