626449 has 4 divisors (see below), whose sum is σ = 659440. Its totient is φ = 593460.

The previous prime is 626443. The next prime is 626477. The reversal of 626449 is 944626.

626449 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

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 626449 - 2¹¹ = 624401 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 2³ + 4⁵ + 6⁷ + 4⁸ + 9 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 626449.

It is not an unprimeable number, because it can be changed into a prime (626443) 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, 16467 + ... + 16504.

It is an arithmetic number, because the mean of its divisors is an integer number (164860).

2⁶²⁶⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

626449 is a deficient number, since it is larger than the sum of its proper divisors (32991).

626449 is a wasteful number, since it uses less digits than its factorization.

626449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32990.

The product of its digits is 10368, while the sum is 31.

The square root of 626449 is about 791.4853125611. The cubic root of 626449 is about 85.5648198085.

It can be divided in two parts, 6264 and 49, that multiplied together give a triangular number (306936 = T₇₈₃).

The spelling of 626449 in words is "six hundred twenty-six thousand, four hundred forty-nine".