634769830 has 16 divisors (see below), whose sum is σ = 1145982240. Its totient is φ = 253153152.

The previous prime is 634769813. The next prime is 634769833. The reversal of 634769830 is 38967436.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634769833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90810 + ... + 97549.

It is an arithmetic number, because the mean of its divisors is an integer number (71623890).

Almost surely, 2^634769830 is an apocalyptic number.

634769830 is a deficient number, since it is larger than the sum of its proper divisors (511212410).

634769830 is a wasteful number, since it uses less digits than its factorization.

634769830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188703.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 634769830 is about 25194.6389138642. The cubic root of 634769830 is about 859.4199396532.

The spelling of 634769830 in words is "six hundred thirty-four million, seven hundred sixty-nine thousand, eight hundred thirty".