406665022 has 4 divisors (see below), whose sum is σ = 609997536. Its totient is φ = 203332510.

The previous prime is 406664989. The next prime is 406665023. The reversal of 406665022 is 220566604.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406665023) 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 as a sum of consecutive naturals, namely, 101666254 + ... + 101666257.

It is an arithmetic number, because the mean of its divisors is an integer number (152499384).

Almost surely, 2^406665022 is an apocalyptic number.

406665022 is a deficient number, since it is larger than the sum of its proper divisors (203332514).

406665022 is a wasteful number, since it uses less digits than its factorization.

406665022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203332513.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 406665022 is about 20165.9371713789. The cubic root of 406665022 is about 740.8761366091.

The spelling of 406665022 in words is "four hundred six million, six hundred sixty-five thousand, twenty-two".