634497073 has 8 divisors (see below), whose sum is σ = 725297792. Its totient is φ = 543735936.

The previous prime is 634497047. The next prime is 634497107. The reversal of 634497073 is 370794436.

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 634497073 - 2⁵ = 634497041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634497013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44161 + ... + 56737.

It is an arithmetic number, because the mean of its divisors is an integer number (90662224).

Almost surely, 2^634497073 is an apocalyptic number.

It is an amenable number.

634497073 is a deficient number, since it is larger than the sum of its proper divisors (90800719).

634497073 is a wasteful number, since it uses less digits than its factorization.

634497073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19791.

The product of its (nonzero) digits is 381024, while the sum is 43.

The square root of 634497073 is about 25189.2253354485. The cubic root of 634497073 is about 859.2968260580.

The spelling of 634497073 in words is "six hundred thirty-four million, four hundred ninety-seven thousand, seventy-three".