634608743 has 4 divisors (see below), whose sum is σ = 637021968. Its totient is φ = 632195520.

The previous prime is 634608727. The next prime is 634608763. The reversal of 634608743 is 347806436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 634608743 - 2⁴ = 634608727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 634608743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634608703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206218 + ... + 1206743.

It is an arithmetic number, because the mean of its divisors is an integer number (159255492).

Almost surely, 2^634608743 is an apocalyptic number.

634608743 is a deficient number, since it is larger than the sum of its proper divisors (2413225).

634608743 is a wasteful number, since it uses less digits than its factorization.

634608743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413224.

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 634608743 is about 25191.4418602826. The cubic root of 634608743 is about 859.3472345110.

The spelling of 634608743 in words is "six hundred thirty-four million, six hundred eight thousand, seven hundred forty-three".