627921249 has 8 divisors (see below), whose sum is σ = 840187872. Its totient is φ = 417134400.

The previous prime is 627921209. The next prime is 627921257. The reversal of 627921249 is 942129726.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 627921249 - 2¹³ = 627913057 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 627921249.

It is not an unprimeable number, because it can be changed into a prime (627921209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368952 + ... + 370649.

It is an arithmetic number, because the mean of its divisors is an integer number (105023484).

Almost surely, 2^627921249 is an apocalyptic number.

It is an amenable number.

627921249 is a deficient number, since it is larger than the sum of its proper divisors (212266623).

627921249 is a wasteful number, since it uses less digits than its factorization.

627921249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739887.

The product of its digits is 108864, while the sum is 42.

The square root of 627921249 is about 25058.3568695156. The cubic root of 627921249 is about 856.3179741515.

The spelling of 627921249 in words is "six hundred twenty-seven million, nine hundred twenty-one thousand, two hundred forty-nine".