684642929000 has 64 divisors (see below), whose sum is σ = 1608020715600. Its totient is φ = 272839008000.

The previous prime is 684642928927. The next prime is 684642929059. The reversal of 684642929000 is 929246486.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 15221143876 + 669421785124 = 123374^2 + 818182^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 684642929000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1003571 + ... + 1541570.

Almost surely, 2^684642929000 is an apocalyptic number.

It is an amenable number.

684642929000 is an abundant number, since it is smaller than the sum of its proper divisors (923377786600).

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

684642929000 is a wasteful number, since it uses less digits than its factorization.

684642929000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545431 (or 2545417 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 684642929000 in words is "six hundred eighty-four billion, six hundred forty-two million, nine hundred twenty-nine thousand".