684413493 has 8 divisors (see below), whose sum is σ = 912799968. Its totient is φ = 456151344.

The previous prime is 684413491. The next prime is 684413551. The reversal of 684413493 is 394314486.

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

It is not a de Polignac number, because 684413493 - 2¹ = 684413491 is a prime.

It is a super-2 number, since 2×684413493² = 936843658800922098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684413491) 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, 17371 + ... + 40872.

It is an arithmetic number, because the mean of its divisors is an integer number (114099996).

Almost surely, 2^684413493 is an apocalyptic number.

It is an amenable number.

684413493 is a deficient number, since it is larger than the sum of its proper divisors (228386475).

684413493 is a wasteful number, since it uses less digits than its factorization.

684413493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62163.

The product of its digits is 248832, while the sum is 42.

The square root of 684413493 is about 26161.2976168997. The cubic root of 684413493 is about 881.2643211596.

The spelling of 684413493 in words is "six hundred eighty-four million, four hundred thirteen thousand, four hundred ninety-three".