684964697 has 8 divisors (see below), whose sum is σ = 726278400. Its totient is φ = 643764544.

The previous prime is 684964691. The next prime is 684964711. The reversal of 684964697 is 796469486.

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

It is a cyclic number.

It is not a de Polignac number, because 684964697 - 2¹⁸ = 684702553 is a prime.

It is a super-2 number, since 2×684964697² = 938353272272603618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684964691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15797 + ... + 40242.

It is an arithmetic number, because the mean of its divisors is an integer number (90784800).

Almost surely, 2^684964697 is an apocalyptic number.

It is an amenable number.

684964697 is a deficient number, since it is larger than the sum of its proper divisors (41313703).

684964697 is a wasteful number, since it uses less digits than its factorization.

684964697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56775.

The product of its digits is 15676416, while the sum is 59.

The square root of 684964697 is about 26171.8302187677. The cubic root of 684964697 is about 881.5008380596.

The spelling of 684964697 in words is "six hundred eighty-four million, nine hundred sixty-four thousand, six hundred ninety-seven".