633729945 has 8 divisors (see below), whose sum is σ = 1013967936. Its totient is φ = 337989296.

The previous prime is 633729913. The next prime is 633729949. The reversal of 633729945 is 549927336.

It is a happy number.

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 633729945 - 2⁵ = 633729913 is a prime.

It is a super-2 number, since 2×633729945² = 803227286379406050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 633729894 and 633729903.

It is not an unprimeable number, because it can be changed into a prime (633729949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21124317 + ... + 21124346.

It is an arithmetic number, because the mean of its divisors is an integer number (126745992).

Almost surely, 2^633729945 is an apocalyptic number.

It is an amenable number.

633729945 is a deficient number, since it is larger than the sum of its proper divisors (380237991).

633729945 is a wasteful number, since it uses less digits than its factorization.

633729945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42248671.

The product of its digits is 1224720, while the sum is 48.

The square root of 633729945 is about 25173.9934257559. The cubic root of 633729945 is about 858.9503802805.

The spelling of 633729945 in words is "six hundred thirty-three million, seven hundred twenty-nine thousand, nine hundred forty-five".