631449 has 32 divisors (see below), whose sum is σ = 1155840. Its totient is φ = 331776.

The previous prime is 631429. The next prime is 631453. The reversal of 631449 is 944136.

It is not a de Polignac number, because 631449 - 2¹¹ = 629401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2329 + ... + 2585.

It is an arithmetic number, because the mean of its divisors is an integer number (36120).

2⁶³¹⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

631449 is a deficient number, since it is larger than the sum of its proper divisors (524391).

631449 is a wasteful number, since it uses less digits than its factorization.

631449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 280 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 631449 is about 794.6376532735. The cubic root of 631449 is about 85.7918619109.

The spelling of 631449 in words is "six hundred thirty-one thousand, four hundred forty-nine".