413781685 has 8 divisors (see below), whose sum is σ = 498106296. Its totient is φ = 329979840.

The previous prime is 413781679. The next prime is 413781689. The reversal of 413781685 is 586187314.

It can be written as a sum of positive squares in 4 ways, for example, as 57062916 + 356718769 = 7554^2 + 18887^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-413781685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (413781689) 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, 128946 + ... + 132115.

It is an arithmetic number, because the mean of its divisors is an integer number (62263287).

Almost surely, 2^413781685 is an apocalyptic number.

It is an amenable number.

413781685 is a deficient number, since it is larger than the sum of its proper divisors (84324611).

413781685 is a wasteful number, since it uses less digits than its factorization.

413781685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261383.

The product of its digits is 161280, while the sum is 43.

The square root of 413781685 is about 20341.6244434902. The cubic root of 413781685 is about 745.1729610580.

The spelling of 413781685 in words is "four hundred thirteen million, seven hundred eighty-one thousand, six hundred eighty-five".