634387270 has 24 divisors (see below), whose sum is σ = 1255145472. Its totient is φ = 230685840.

The previous prime is 634387253. The next prime is 634387291. The reversal of 634387270 is 72783436.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260934 + ... + 263353.

It is an arithmetic number, because the mean of its divisors is an integer number (52297728).

Almost surely, 2^634387270 is an apocalyptic number.

634387270 is a deficient number, since it is larger than the sum of its proper divisors (620758202).

634387270 is a wasteful number, since it uses less digits than its factorization.

634387270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524316 (or 524305 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 634387270 is about 25187.0456782847. The cubic root of 634387270 is about 859.2472546117.

The spelling of 634387270 in words is "six hundred thirty-four million, three hundred eighty-seven thousand, two hundred seventy".