684379026 has 24 divisors (see below), whose sum is σ = 1491706944. Its totient is φ = 226759320.

The previous prime is 684379021. The next prime is 684379039. The reversal of 684379026 is 620973486.

It is not an unprimeable number, because it can be changed into a prime (684379021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110830 + ... + 116841.

It is an arithmetic number, because the mean of its divisors is an integer number (62154456).

Almost surely, 2^684379026 is an apocalyptic number.

684379026 is an abundant number, since it is smaller than the sum of its proper divisors (807327918).

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

684379026 is a wasteful number, since it uses less digits than its factorization.

684379026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227846 (or 227843 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 684379026 is about 26160.6388683457. The cubic root of 684379026 is about 881.2495274481.

The spelling of 684379026 in words is "six hundred eighty-four million, three hundred seventy-nine thousand, twenty-six".