684303537 has 4 divisors (see below), whose sum is σ = 912404720. Its totient is φ = 456202356.

The previous prime is 684303523. The next prime is 684303541. The reversal of 684303537 is 735303486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 684303537 - 2¹⁶ = 684238001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 684303495 and 684303504.

It is not an unprimeable number, because it can be changed into a prime (684303577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114050587 + ... + 114050592.

It is an arithmetic number, because the mean of its divisors is an integer number (228101180).

Almost surely, 2^684303537 is an apocalyptic number.

It is an amenable number.

684303537 is a deficient number, since it is larger than the sum of its proper divisors (228101183).

684303537 is a wasteful number, since it uses less digits than its factorization.

684303537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228101182.

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 684303537 is about 26159.1960312239. The cubic root of 684303537 is about 881.2171247934.

The spelling of 684303537 in words is "six hundred eighty-four million, three hundred three thousand, five hundred thirty-seven".