633691066 has 8 divisors (see below), whose sum is σ = 950659380. Its totient is φ = 316804608.

The previous prime is 633691063. The next prime is 633691073. The reversal of 633691066 is 660196336.

It can be written as a sum of positive squares in 2 ways, for example, as 469979041 + 163712025 = 21679^2 + 12795^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (633691063) 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 3 ways as a sum of consecutive naturals, for example, 5460 + ... + 36016.

Almost surely, 2^633691066 is an apocalyptic number.

633691066 is a deficient number, since it is larger than the sum of its proper divisors (316968314).

633691066 is a wasteful number, since it uses less digits than its factorization.

633691066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40928.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 633691066 is about 25173.2212082602. The cubic root of 633691066 is about 858.9328145360.

The spelling of 633691066 in words is "six hundred thirty-three million, six hundred ninety-one thousand, sixty-six".