684842802 has 64 divisors (see below), whose sum is σ = 1719429120. Its totient is φ = 177306624.

The previous prime is 684842761. The next prime is 684842813. The reversal of 684842802 is 208248486.

It is a super-2 number, since 2×684842802² = 938019326902422408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303 + ... + 37010.

It is an arithmetic number, because the mean of its divisors is an integer number (26866080).

Almost surely, 2^684842802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684842802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859714560).

684842802 is an abundant number, since it is smaller than the sum of its proper divisors (1034586318).

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

684842802 is a wasteful number, since it uses less digits than its factorization.

684842802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37367.

The product of its (nonzero) digits is 196608, while the sum is 42.

The square root of 684842802 is about 26169.5013708706. The cubic root of 684842802 is about 881.4485448929.

The spelling of 684842802 in words is "six hundred eighty-four million, eight hundred forty-two thousand, eight hundred two".