634857860446 has 4 divisors (see below), whose sum is σ = 952286790672. Its totient is φ = 317428930222.

The previous prime is 634857860407. The next prime is 634857860467. The reversal of 634857860446 is 644068758436.

It is a happy number.

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

It is a super-2 number, since 2×634857860446² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158714465110 + ... + 158714465113.

It is an arithmetic number, because the mean of its divisors is an integer number (238071697668).

Almost surely, 2^634857860446 is an apocalyptic number.

634857860446 is a deficient number, since it is larger than the sum of its proper divisors (317428930226).

634857860446 is a wasteful number, since it uses less digits than its factorization.

634857860446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317428930225.

The product of its (nonzero) digits is 92897280, while the sum is 61.

The spelling of 634857860446 in words is "six hundred thirty-four billion, eight hundred fifty-seven million, eight hundred sixty thousand, four hundred forty-six".