402076066 has 24 divisors (see below), whose sum is σ = 702528876. Its totient is φ = 172085760.

The previous prime is 402076057. The next prime is 402076067. The reversal of 402076066 is 660670204.

It can be written as a sum of positive squares in 2 ways, for example, as 343323841 + 58752225 = 18529^2 + 7665^2 .

It is not an unprimeable number, because it can be changed into a prime (402076067) 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 11 ways as a sum of consecutive naturals, for example, 84010 + ... + 88666.

Almost surely, 2^402076066 is an apocalyptic number.

402076066 is a deficient number, since it is larger than the sum of its proper divisors (300452810).

402076066 is a wasteful number, since it uses less digits than its factorization.

402076066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5554 (or 5547 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 402076066 is about 20051.8344796679. The cubic root of 402076066 is about 738.0788161601.

The spelling of 402076066 in words is "four hundred two million, seventy-six thousand, sixty-six".