634740764 has 24 divisors (see below), whose sum is σ = 1344157920. Its totient is φ = 256029696.

The previous prime is 634740763. The next prime is 634740787. The reversal of 634740764 is 467047436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634740763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666269 + ... + 667220.

It is an arithmetic number, because the mean of its divisors is an integer number (56006580).

Almost surely, 2^634740764 is an apocalyptic number.

It is an amenable number.

634740764 is an abundant number, since it is smaller than the sum of its proper divisors (709417156).

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

634740764 is a wasteful number, since it uses less digits than its factorization.

634740764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333517 (or 1333515 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 41.

The square root of 634740764 is about 25194.0620781961. The cubic root of 634740764 is about 859.4068218899.

The spelling of 634740764 in words is "six hundred thirty-four million, seven hundred forty thousand, seven hundred sixty-four".