628629941 has 2 divisors, whose sum is σ = 628629942. Its totient is φ = 628629940.

The previous prime is 628629931. The next prime is 628629971. The reversal of 628629941 is 149926826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 526518916 + 102111025 = 22946^2 + 10105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628629941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628629931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314314970 + 314314971.

It is an arithmetic number, because the mean of its divisors is an integer number (314314971).

Almost surely, 2^628629941 is an apocalyptic number.

It is an amenable number.

628629941 is a deficient number, since it is larger than the sum of its proper divisors (1).

628629941 is an equidigital number, since it uses as much as digits as its factorization.

628629941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 628629941 is about 25072.4937132308. The cubic root of 628629941 is about 856.6400089780.

The spelling of 628629941 in words is "six hundred twenty-eight million, six hundred twenty-nine thousand, nine hundred forty-one".