684516801 has 16 divisors (see below), whose sum is σ = 924948864. Its totient is φ = 450255744.

The previous prime is 684516799. The next prime is 684516809. The reversal of 684516801 is 108615486.

It is not a de Polignac number, because 684516801 - 2¹ = 684516799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 684516801.

It is not an unprimeable number, because it can be changed into a prime (684516809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63651 + ... + 73623.

It is an arithmetic number, because the mean of its divisors is an integer number (57809304).

Almost surely, 2^684516801 is an apocalyptic number.

It is an amenable number.

684516801 is a deficient number, since it is larger than the sum of its proper divisors (240432063).

684516801 is a wasteful number, since it uses less digits than its factorization.

684516801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10280.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 684516801 is about 26163.2719857437. The cubic root of 684516801 is about 881.3086594020.

The spelling of 684516801 in words is "six hundred eighty-four million, five hundred sixteen thousand, eight hundred one".