627393451666 has 16 divisors (see below), whose sum is σ = 973594488600. Its totient is φ = 302863131648.

The previous prime is 627393451661. The next prime is 627393451679. The reversal of 627393451666 is 666154393726.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 601212593641 + 26180858025 = 775379^2 + 161805^2 .

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a self number, because there is not a number n which added to its sum of digits gives 627393451666.

It is not an unprimeable number, because it can be changed into a prime (627393451661) 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, 817996 + ... + 1387048.

Almost surely, 2^627393451666 is an apocalyptic number.

627393451666 is a deficient number, since it is larger than the sum of its proper divisors (346201036934).

627393451666 is a wasteful number, since it uses less digits than its factorization.

627393451666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588093.

The product of its digits is 29393280, while the sum is 58.

The spelling of 627393451666 in words is "six hundred twenty-seven billion, three hundred ninety-three million, four hundred fifty-one thousand, six hundred sixty-six".