415681 has 8 divisors (see below), whose sum is σ = 486464. Its totient is φ = 347760.

The previous prime is 415673. The next prime is 415687. The reversal of 415681 is 186514.

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

It is not a de Polignac number, because 415681 - 2³ = 415673 is a prime.

It is a super-2 number, since 2×415681² = 345581387522, which contains 22 as substring.

It is a Duffinian number.

415681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (415687) 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, 390 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (60808).

2⁴¹⁵⁶⁸¹ is an apocalyptic number.

It is an amenable number.

415681 is a deficient number, since it is larger than the sum of its proper divisors (70783).

415681 is a wasteful number, since it uses less digits than its factorization.

415681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431.

The product of its digits is 960, while the sum is 25.

The square root of 415681 is about 644.7332781856. The cubic root of 415681 is about 74.6311369900.

The spelling of 415681 in words is "four hundred fifteen thousand, six hundred eighty-one".