629778241 has 4 divisors (see below), whose sum is σ = 632763184. Its totient is φ = 626793300.

The previous prime is 629778229. The next prime is 629778251. The reversal of 629778241 is 142877926.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142877926 = 2 ⋅71438963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-629778241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 629778191 and 629778200.

It is not an unprimeable number, because it can be changed into a prime (629778211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492155 + ... + 1492576.

It is an arithmetic number, because the mean of its divisors is an integer number (158190796).

Almost surely, 2^629778241 is an apocalyptic number.

It is an amenable number.

629778241 is a deficient number, since it is larger than the sum of its proper divisors (2984943).

629778241 is a wasteful number, since it uses less digits than its factorization.

629778241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984942.

The product of its digits is 338688, while the sum is 46.

The square root of 629778241 is about 25095.3828621920. The cubic root of 629778241 is about 857.1612914858.

The spelling of 629778241 in words is "six hundred twenty-nine million, seven hundred seventy-eight thousand, two hundred forty-one".