629959680 has 660 divisors, whose sum is σ = 2710686528. Its totient is φ = 139345920.

The previous prime is 629959651. The next prime is 629959691. The reversal of 629959680 is 86959926.

629959680 is a `hidden beast` number, since 629 + 9 + 5 + 9 + 6 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 20321265 + ... + 20321295.

Almost surely, 2^629959680 is an apocalyptic number.

629959680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 629959680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355343264).

629959680 is an abundant number, since it is smaller than the sum of its proper divisors (2080726848).

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

629959680 is a wasteful number, since it uses less digits than its factorization.

629959680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 629959680 is about 25098.9975895453. The cubic root of 629959680 is about 857.2435995876.

The spelling of 629959680 in words is "six hundred twenty-nine million, nine hundred fifty-nine thousand, six hundred eighty".