684946272 has 24 divisors (see below), whose sum is σ = 1797984216. Its totient is φ = 228315392.

The previous prime is 684946261. The next prime is 684946291. The reversal of 684946272 is 272649486.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567333 + ... + 3567524.

It is an arithmetic number, because the mean of its divisors is an integer number (74916009).

Almost surely, 2^684946272 is an apocalyptic number.

It is an amenable number.

684946272 is an abundant number, since it is smaller than the sum of its proper divisors (1113037944).

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

684946272 is a wasteful number, since it uses less digits than its factorization.

684946272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134870 (or 7134862 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 684946272 is about 26171.4782157982. The cubic root of 684946272 is about 881.4929341006.

The spelling of 684946272 in words is "six hundred eighty-four million, nine hundred forty-six thousand, two hundred seventy-two".