631797 has 4 divisors (see below), whose sum is σ = 842400. Its totient is φ = 421196.

The previous prime is 631789. The next prime is 631817. The reversal of 631797 is 797136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 631797 - 2³ = 631789 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 (631717) 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, 105297 + ... + 105302.

It is an arithmetic number, because the mean of its divisors is an integer number (210600).

2⁶³¹⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

631797 is a deficient number, since it is larger than the sum of its proper divisors (210603).

631797 is a wasteful number, since it uses less digits than its factorization.

631797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210602.

The product of its digits is 7938, while the sum is 33.

The square root of 631797 is about 794.8565908389. The cubic root of 631797 is about 85.8076193645.

The spelling of 631797 in words is "six hundred thirty-one thousand, seven hundred ninety-seven".