634147 has 4 divisors (see below), whose sum is σ = 649656. Its totient is φ = 618640.

The previous prime is 634141. The next prime is 634157. The reversal of 634147 is 741436.

634147 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 634147 - 2¹⁵ = 601379 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

634147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (634141) 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, 7693 + ... + 7774.

It is an arithmetic number, because the mean of its divisors is an integer number (162414).

2⁶³⁴¹⁴⁷ is an apocalyptic number.

634147 is a deficient number, since it is larger than the sum of its proper divisors (15509).

634147 is a wasteful number, since it uses less digits than its factorization.

634147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15508.

The product of its digits is 2016, while the sum is 25.

The square root of 634147 is about 796.3334728617. Note that the first 3 decimals coincide. The cubic root of 634147 is about 85.9138762834.

The spelling of 634147 in words is "six hundred thirty-four thousand, one hundred forty-seven".