629649704 has 8 divisors (see below), whose sum is σ = 1180593210. Its totient is φ = 314824848.

The previous prime is 629649701. The next prime is 629649707. The reversal of 629649704 is 407946926.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (629649701) and next prime (629649707).

It can be written as a sum of positive squares in only one way, i.e., 590587204 + 39062500 = 24302^2 + 6250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (629649701) 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 as a sum of consecutive naturals, namely, 39353099 + ... + 39353114.

Almost surely, 2^629649704 is an apocalyptic number.

It is an amenable number.

629649704 is a deficient number, since it is larger than the sum of its proper divisors (550943506).

629649704 is a wasteful number, since it uses less digits than its factorization.

629649704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78706219 (or 78706215 counting only the distinct ones).

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

The square root of 629649704 is about 25092.8217624085. The cubic root of 629649704 is about 857.1029723134.

The spelling of 629649704 in words is "six hundred twenty-nine million, six hundred forty-nine thousand, seven hundred four".