634536066 has 16 divisors (see below), whose sum is σ = 1312833600. Its totient is φ = 204218448.

The previous prime is 634536059. The next prime is 634536083. The reversal of 634536066 is 660635436.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1823206 + ... + 1823553.

It is an arithmetic number, because the mean of its divisors is an integer number (82052100).

Almost surely, 2^634536066 is an apocalyptic number.

634536066 is an abundant number, since it is smaller than the sum of its proper divisors (678297534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634536066 is a wasteful number, since it uses less digits than its factorization.

634536066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646793.

The product of its (nonzero) digits is 233280, while the sum is 39.

The square root of 634536066 is about 25189.9993251290. Note that the first 3 decimals coincide. The cubic root of 634536066 is about 859.3144283849.

The spelling of 634536066 in words is "six hundred thirty-four million, five hundred thirty-six thousand, sixty-six".