629668240 has 40 divisors (see below), whose sum is σ = 1527634368. Its totient is φ = 240915840.

The previous prime is 629668231. The next prime is 629668241. The reversal of 629668240 is 42866926.

629668240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (629668241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169266 + ... + 172945.

Almost surely, 2^629668240 is an apocalyptic number.

It is an amenable number.

629668240 is an abundant number, since it is smaller than the sum of its proper divisors (897966128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

629668240 is a wasteful number, since it uses less digits than its factorization.

629668240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342247 (or 342241 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 629668240 is about 25093.1911083465. The cubic root of 629668240 is about 857.1113828654. Note that the first 3 decimals are identical.

The spelling of 629668240 in words is "six hundred twenty-nine million, six hundred sixty-eight thousand, two hundred forty".