634857772 has 6 divisors (see below), whose sum is σ = 1111001108. Its totient is φ = 317428884.

The previous prime is 634857757. The next prime is 634857781. The reversal of 634857772 is 277758436.

It is a happy number.

634857772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79357218 + ... + 79357225.

Almost surely, 2^634857772 is an apocalyptic number.

It is an amenable number.

634857772 is a deficient number, since it is larger than the sum of its proper divisors (476143336).

634857772 is a wasteful number, since it uses less digits than its factorization.

634857772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158714447 (or 158714445 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 49.

The square root of 634857772 is about 25196.3841056609. The cubic root of 634857772 is about 859.4596262791.

The spelling of 634857772 in words is "six hundred thirty-four million, eight hundred fifty-seven thousand, seven hundred seventy-two".