633220257 has 16 divisors (see below), whose sum is σ = 867843392. Its totient is φ = 410391360.

The previous prime is 633220253. The next prime is 633220297. The reversal of 633220257 is 752022336.

633220257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 633220257 - 2² = 633220253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633220253) 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, 235203 + ... + 237879.

It is an arithmetic number, because the mean of its divisors is an integer number (54240212).

Almost surely, 2^633220257 is an apocalyptic number.

It is an amenable number.

633220257 is a deficient number, since it is larger than the sum of its proper divisors (234623135).

633220257 is a wasteful number, since it uses less digits than its factorization.

633220257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 633220257 is about 25163.8680850143. The cubic root of 633220257 is about 858.7200434071.

The spelling of 633220257 in words is "six hundred thirty-three million, two hundred twenty thousand, two hundred fifty-seven".