402646066 has 16 divisors (see below), whose sum is σ = 618631200. Its totient is φ = 196445088.

The previous prime is 402646051. The next prime is 402646067. The reversal of 402646066 is 660646204.

It is not an unprimeable number, because it can be changed into a prime (402646067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123870 + ... + 127078.

It is an arithmetic number, because the mean of its divisors is an integer number (38664450).

Almost surely, 2^402646066 is an apocalyptic number.

402646066 is a deficient number, since it is larger than the sum of its proper divisors (215985134).

402646066 is a wasteful number, since it uses less digits than its factorization.

402646066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 402646066 is about 20066.0426093438. The cubic root of 402646066 is about 738.4274287024.

The spelling of 402646066 in words is "four hundred two million, six hundred forty-six thousand, sixty-six".