634737067 has 2 divisors, whose sum is σ = 634737068. Its totient is φ = 634737066.

The previous prime is 634737001. The next prime is 634737071. The reversal of 634737067 is 760737436.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634737067 is a prime.

It is a super-2 number, since 2×634737067² = 805782288447524978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (634737767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317368533 + 317368534.

It is an arithmetic number, because the mean of its divisors is an integer number (317368534).

Almost surely, 2^634737067 is an apocalyptic number.

634737067 is a deficient number, since it is larger than the sum of its proper divisors (1).

634737067 is an equidigital number, since it uses as much as digits as its factorization.

634737067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 43.

The square root of 634737067 is about 25193.9887076263. The cubic root of 634737067 is about 859.4051533697.

The spelling of 634737067 in words is "six hundred thirty-four million, seven hundred thirty-seven thousand, sixty-seven".