684474038 has 4 divisors (see below), whose sum is σ = 1026711060. Its totient is φ = 342237018.

The previous prime is 684473987. The next prime is 684474041. The reversal of 684474038 is 830474486.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 684474038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171118508 + ... + 171118511.

It is an arithmetic number, because the mean of its divisors is an integer number (256677765).

Almost surely, 2^684474038 is an apocalyptic number.

684474038 is a deficient number, since it is larger than the sum of its proper divisors (342237022).

684474038 is a wasteful number, since it uses less digits than its factorization.

684474038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342237021.

The product of its (nonzero) digits is 516096, while the sum is 44.

The square root of 684474038 is about 26162.4547395691. The cubic root of 684474038 is about 881.2903067056.

The spelling of 684474038 in words is "six hundred eighty-four million, four hundred seventy-four thousand, thirty-eight".