406214643 has 24 divisors (see below), whose sum is σ = 583545600. Its totient is φ = 251251840.

The previous prime is 406214639. The next prime is 406214647. The reversal of 406214643 is 346412604.

It is an interprime number because it is at equal distance from previous prime (406214639) and next prime (406214647).

It is not a de Polignac number, because 406214643 - 2² = 406214639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406214643.

It is not an unprimeable number, because it can be changed into a prime (406214647) 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 23 ways as a sum of consecutive naturals, for example, 58258 + ... + 64856.

It is an arithmetic number, because the mean of its divisors is an integer number (24314400).

Almost surely, 2^406214643 is an apocalyptic number.

406214643 is a deficient number, since it is larger than the sum of its proper divisors (177330957).

406214643 is a wasteful number, since it uses less digits than its factorization.

406214643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707 (or 6690 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 406214643 is about 20154.7672524393. The cubic root of 406214643 is about 740.6025303301.

The spelling of 406214643 in words is "four hundred six million, two hundred fourteen thousand, six hundred forty-three".