406681513 has 8 divisors (see below), whose sum is σ = 472656960. Its totient is φ = 342675600.

The previous prime is 406681511. The next prime is 406681523. The reversal of 406681513 is 315186604.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 406681513 - 2¹ = 406681511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406681511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491938 + ... + 492763.

It is an arithmetic number, because the mean of its divisors is an integer number (59082120).

Almost surely, 2^406681513 is an apocalyptic number.

It is an amenable number.

406681513 is a deficient number, since it is larger than the sum of its proper divisors (65975447).

406681513 is an equidigital number, since it uses as much as digits as its factorization.

406681513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984767.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 406681513 is about 20166.3460497930. The cubic root of 406681513 is about 740.8861510948.

The spelling of 406681513 in words is "four hundred six million, six hundred eighty-one thousand, five hundred thirteen".