684770613 has 8 divisors (see below), whose sum is σ = 913910400. Its totient is φ = 456072288.

The previous prime is 684770609. The next prime is 684770617. The reversal of 684770613 is 316077486.

It is an interprime number because it is at equal distance from previous prime (684770609) and next prime (684770617).

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

It is not a de Polignac number, because 684770613 - 2² = 684770609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684770617) 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 7 ways as a sum of consecutive naturals, for example, 106728 + ... + 112961.

It is an arithmetic number, because the mean of its divisors is an integer number (114238800).

Almost surely, 2^684770613 is an apocalyptic number.

It is an amenable number.

684770613 is a deficient number, since it is larger than the sum of its proper divisors (229139787).

684770613 is a wasteful number, since it uses less digits than its factorization.

684770613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220731.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 684770613 is about 26168.1220762973. The cubic root of 684770613 is about 881.4175727610.

The spelling of 684770613 in words is "six hundred eighty-four million, seven hundred seventy thousand, six hundred thirteen".