634880788 has 12 divisors (see below), whose sum is σ = 1123525620. Its totient is φ = 313873472.

The previous prime is 634880783. The next prime is 634880791. The reversal of 634880788 is 887088436.

It can be written as a sum of positive squares in 2 ways, for example, as 257666704 + 377214084 = 16052^2 + 19422^2 .

It is a super-2 number, since 2×634880788² = 806147229943001888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634880783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891331 + ... + 892042.

It is an arithmetic number, because the mean of its divisors is an integer number (93627135).

Almost surely, 2^634880788 is an apocalyptic number.

It is an amenable number.

634880788 is a deficient number, since it is larger than the sum of its proper divisors (488644832).

634880788 is a wasteful number, since it uses less digits than its factorization.

634880788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783466 (or 1783464 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 52.

The square root of 634880788 is about 25196.8408337236. The cubic root of 634880788 is about 859.4700123764.

The spelling of 634880788 in words is "six hundred thirty-four million, eight hundred eighty thousand, seven hundred eighty-eight".