627504161 has 2 divisors, whose sum is σ = 627504162. Its totient is φ = 627504160.

The previous prime is 627504149. The next prime is 627504167. The reversal of 627504161 is 161405726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392832400 + 234671761 = 19820^2 + 15319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-627504161 is a prime.

It is a super-2 number, since 2×627504161² = 787522944144627842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (627504167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313752080 + 313752081.

It is an arithmetic number, because the mean of its divisors is an integer number (313752081).

Almost surely, 2^627504161 is an apocalyptic number.

It is an amenable number.

627504161 is a deficient number, since it is larger than the sum of its proper divisors (1).

627504161 is an equidigital number, since it uses as much as digits as its factorization.

627504161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 627504161 is about 25050.0331536707. The cubic root of 627504161 is about 856.1283330352.

Adding to 627504161 its reverse (161405726), we get a palindrome (788909887).

The spelling of 627504161 in words is "six hundred twenty-seven million, five hundred four thousand, one hundred sixty-one".