634497071 has 4 divisors (see below), whose sum is σ = 683304552. Its totient is φ = 585689592.

The previous prime is 634497047. The next prime is 634497107. The reversal of 634497071 is 170794436.

634497071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 634497071 - 2²⁶ = 567388207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634497041) 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, 24403721 + ... + 24403746.

It is an arithmetic number, because the mean of its divisors is an integer number (170826138).

Almost surely, 2^634497071 is an apocalyptic number.

634497071 is a deficient number, since it is larger than the sum of its proper divisors (48807481).

634497071 is a wasteful number, since it uses less digits than its factorization.

634497071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48807480.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 634497071 is about 25189.2252957490. The cubic root of 634497071 is about 859.2968251551.

The spelling of 634497071 in words is "six hundred thirty-four million, four hundred ninety-seven thousand, seventy-one".