634193422067 has 4 divisors (see below), whose sum is σ = 634198171656. Its totient is φ = 634188672480.

The previous prime is 634193422001. The next prime is 634193422141. The reversal of 634193422067 is 760224391436.

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 634193422067 - 2³⁶ = 565473945331 is a prime.

It is a super-3 number, since 3×634193422067³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634193421067) 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, 2168534 + ... + 2443547.

It is an arithmetic number, because the mean of its divisors is an integer number (158549542914).

Almost surely, 2^634193422067 is an apocalyptic number.

634193422067 is a deficient number, since it is larger than the sum of its proper divisors (4749589).

634193422067 is a wasteful number, since it uses less digits than its factorization.

634193422067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749588.

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 634193422067 in words is "six hundred thirty-four billion, one hundred ninety-three million, four hundred twenty-two thousand, sixty-seven".