634951 has 4 divisors (see below), whose sum is σ = 637272. Its totient is φ = 632632.

The previous prime is 634943. The next prime is 634969. The reversal of 634951 is 159436.

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 634951 - 2³ = 634943 is a prime.

It is a Duffinian number.

634951 is a modest number, since divided by 951 gives 634 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634901) 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, 685 + ... + 1318.

It is an arithmetic number, because the mean of its divisors is an integer number (159318).

2⁶³⁴⁹⁵¹ is an apocalyptic number.

634951 is a deficient number, since it is larger than the sum of its proper divisors (2321).

634951 is a wasteful number, since it uses less digits than its factorization.

634951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320.

The product of its digits is 3240, while the sum is 28.

The square root of 634951 is about 796.8381265979. The cubic root of 634951 is about 85.9501694379.

It can be divided in two parts, 6349 and 51, that added together give a square (6400 = 80²).

The spelling of 634951 in words is "six hundred thirty-four thousand, nine hundred fifty-one".