1627606649 has 2 divisors, whose sum is σ = 1627606650. Its totient is φ = 1627606648.

The previous prime is 1627606601. The next prime is 1627606657. The reversal of 1627606649 is 9466067261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1468039225 + 159567424 = 38315^2 + 12632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1627606649 - 2¹² = 1627602553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1627606699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813803324 + 813803325.

It is an arithmetic number, because the mean of its divisors is an integer number (813803325).

Almost surely, 2^1627606649 is an apocalyptic number.

It is an amenable number.

1627606649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1627606649 is an equidigital number, since it uses as much as digits as its factorization.

1627606649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 1627606649 is about 40343.6072878963. The cubic root of 1627606649 is about 1176.2956341080.

The spelling of 1627606649 in words is "one billion, six hundred twenty-seven million, six hundred six thousand, six hundred forty-nine".