401020066 has 8 divisors (see below), whose sum is σ = 601654464. Its totient is φ = 200468580.

The previous prime is 401020051. The next prime is 401020079. The reversal of 401020066 is 660020104.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6750 + ... + 29113.

It is an arithmetic number, because the mean of its divisors is an integer number (75206808).

Almost surely, 2^401020066 is an apocalyptic number.

401020066 is a deficient number, since it is larger than the sum of its proper divisors (200634398).

401020066 is a wasteful number, since it uses less digits than its factorization.

401020066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41456.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 401020066 is about 20025.4854123439. The cubic root of 401020066 is about 737.4320939488.

The spelling of 401020066 in words is "four hundred one million, twenty thousand, sixty-six".