684503061 has 8 divisors (see below), whose sum is σ = 995640864. Its totient is φ = 414850320.

The previous prime is 684503059. The next prime is 684503081. The reversal of 684503061 is 160305486.

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

It is not a de Polignac number, because 684503061 - 2¹ = 684503059 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 20742517 = 684503061 / (6 + 8 + 4 + 5 + 0 + 3 + 0 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684503041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10371226 + ... + 10371291.

It is an arithmetic number, because the mean of its divisors is an integer number (124455108).

Almost surely, 2^684503061 is an apocalyptic number.

It is an amenable number.

684503061 is a deficient number, since it is larger than the sum of its proper divisors (311137803).

684503061 is a wasteful number, since it uses less digits than its factorization.

684503061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20742531.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 684503061 is about 26163.0094025898. The cubic root of 684503061 is about 881.3027626575.

The spelling of 684503061 in words is "six hundred eighty-four million, five hundred three thousand, sixty-one".