684056534 has 8 divisors (see below), whose sum is σ = 1172668368. Its totient is φ = 293167080.

The previous prime is 684056507. The next prime is 684056551. The reversal of 684056534 is 435650486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 684056491 and 684056500.

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, 24430577 + ... + 24430604.

It is an arithmetic number, because the mean of its divisors is an integer number (146583546).

Almost surely, 2^684056534 is an apocalyptic number.

684056534 is a deficient number, since it is larger than the sum of its proper divisors (488611834).

684056534 is a wasteful number, since it uses less digits than its factorization.

684056534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48861190.

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 684056534 is about 26154.4744546703. The cubic root of 684056534 is about 881.1110853651. Note that the first 3 decimals are identical.

The spelling of 684056534 in words is "six hundred eighty-four million, fifty-six thousand, five hundred thirty-four".