634673533 has 8 divisors (see below), whose sum is σ = 683922008. Its totient is φ = 585486144.

The previous prime is 634673531. The next prime is 634673539. The reversal of 634673533 is 335376436.

It can be written as a sum of positive squares in 4 ways, for example, as 26656569 + 608016964 = 5163^2 + 24658^2 .

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 634673533 - 2¹ = 634673531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634673531) 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, 7591 + ... + 36427.

It is an arithmetic number, because the mean of its divisors is an integer number (85490251).

Almost surely, 2^634673533 is an apocalyptic number.

It is an amenable number.

634673533 is a deficient number, since it is larger than the sum of its proper divisors (49248475).

634673533 is a wasteful number, since it uses less digits than its factorization.

634673533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30543.

The product of its digits is 408240, while the sum is 40.

The square root of 634673533 is about 25192.7277800559. The cubic root of 634673533 is about 859.3764783631.

The spelling of 634673533 in words is "six hundred thirty-four million, six hundred seventy-three thousand, five hundred thirty-three".