412689681 has 8 divisors (see below), whose sum is σ = 611392160. Its totient is φ = 275126436.

The previous prime is 412689677. The next prime is 412689703. The reversal of 412689681 is 186986214.

It is not a de Polignac number, because 412689681 - 2² = 412689677 is a prime.

It is a super-2 number, since 2×412689681² = 340625545607763522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (412689181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7642375 + ... + 7642428.

It is an arithmetic number, because the mean of its divisors is an integer number (76424020).

Almost surely, 2^412689681 is an apocalyptic number.

It is an amenable number.

412689681 is a deficient number, since it is larger than the sum of its proper divisors (198702479).

412689681 is a wasteful number, since it uses less digits than its factorization.

412689681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15284812 (or 15284806 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 412689681 is about 20314.7650983220. The cubic root of 412689681 is about 744.5168592453.

The spelling of 412689681 in words is "four hundred twelve million, six hundred eighty-nine thousand, six hundred eighty-one".