634742073 has 24 divisors (see below), whose sum is σ = 1109467008. Its totient is φ = 341373312.

The previous prime is 634742047. The next prime is 634742089. The reversal of 634742073 is 370247436.

It is a happy number.

It is not a de Polignac number, because 634742073 - 2⁵ = 634742041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634742093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295261 + ... + 297402.

It is an arithmetic number, because the mean of its divisors is an integer number (46227792).

Almost surely, 2^634742073 is an apocalyptic number.

634742073 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

634742073 is a deficient number, since it is larger than the sum of its proper divisors (474724935).

634742073 is a wasteful number, since it uses less digits than its factorization.

634742073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592693 (or 592690 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

The square root of 634742073 is about 25194.0880565263. The cubic root of 634742073 is about 859.4074126627.

The spelling of 634742073 in words is "six hundred thirty-four million, seven hundred forty-two thousand, seventy-three".