634536067 has 16 divisors (see below), whose sum is σ = 737642592. Its totient is φ = 539435520.

The previous prime is 634536059. The next prime is 634536083. The reversal of 634536067 is 760635436.

It is a cyclic number.

It is not a de Polignac number, because 634536067 - 2³ = 634536059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634536467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18553 + ... + 40165.

It is an arithmetic number, because the mean of its divisors is an integer number (46102662).

Almost surely, 2^634536067 is an apocalyptic number.

634536067 is a deficient number, since it is larger than the sum of its proper divisors (103106525).

634536067 is a wasteful number, since it uses less digits than its factorization.

634536067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21798.

The product of its (nonzero) digits is 272160, while the sum is 40.

The square root of 634536067 is about 25189.9993449782. Note that the first 3 decimals coincide. The cubic root of 634536067 is about 859.3144288363.

The spelling of 634536067 in words is "six hundred thirty-four million, five hundred thirty-six thousand, sixty-seven".