401320066 has 32 divisors (see below), whose sum is σ = 697425408. Its totient is φ = 169646400.

The previous prime is 401320063. The next prime is 401320069. The reversal of 401320066 is 660023104.

It is an interprime number because it is at equal distance from previous prime (401320063) and next prime (401320069).

It is a super-2 number, since 2×401320066² = 322115590748488712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401320063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654376 + ... + 654988.

It is an arithmetic number, because the mean of its divisors is an integer number (21794544).

Almost surely, 2^401320066 is an apocalyptic number.

401320066 is a deficient number, since it is larger than the sum of its proper divisors (296105342).

401320066 is a wasteful number, since it uses less digits than its factorization.

401320066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 401320066 is about 20032.9744671130. The cubic root of 401320066 is about 737.6159371885.

The spelling of 401320066 in words is "four hundred one million, three hundred twenty thousand, sixty-six".