630951 has 4 divisors (see below), whose sum is σ = 841272. Its totient is φ = 420632.

The previous prime is 630941. The next prime is 630967. The reversal of 630951 is 159036.

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 630951 - 2⁵ = 630919 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630901) 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, 105156 + ... + 105161.

It is an arithmetic number, because the mean of its divisors is an integer number (210318).

2⁶³⁰⁹⁵¹ is an apocalyptic number.

630951 is a deficient number, since it is larger than the sum of its proper divisors (210321).

630951 is a wasteful number, since it uses less digits than its factorization.

630951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210320.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 630951 is about 794.3242411006. The cubic root of 630951 is about 85.7693023778.

Adding to 630951 its reverse (159036), we get a palindrome (789987).

The spelling of 630951 in words is "six hundred thirty thousand, nine hundred fifty-one".