629687991960 has 256 divisors, whose sum is σ = 2111028480000. Its totient is φ = 166953945600.

The previous prime is 629687991923. The next prime is 629687991971. The reversal of 629687991960 is 69199786926.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 170138110 + ... + 170141810.

It is an arithmetic number, because the mean of its divisors is an integer number (8246205000).

Almost surely, 2^629687991960 is an apocalyptic number.

629687991960 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 629687991960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1055514240000).

629687991960 is an abundant number, since it is smaller than the sum of its proper divisors (1481340488040).

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

629687991960 is a wasteful number, since it uses less digits than its factorization.

629687991960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583 (or 4573 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 72.

The spelling of 629687991960 in words is "six hundred twenty-nine billion, six hundred eighty-seven million, nine hundred ninety-one thousand, nine hundred sixty".