402066771 has 16 divisors (see below), whose sum is σ = 565847040. Its totient is φ = 253242720.

The previous prime is 402066767. The next prime is 402066781. The reversal of 402066771 is 177660204.

It is not a de Polignac number, because 402066771 - 2² = 402066767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402066761) 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, 11806 + ... + 30716.

It is an arithmetic number, because the mean of its divisors is an integer number (35365440).

Almost surely, 2^402066771 is an apocalyptic number.

402066771 is a deficient number, since it is larger than the sum of its proper divisors (163780269).

402066771 is a wasteful number, since it uses less digits than its factorization.

402066771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19306.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 402066771 is about 20051.6027040234. The cubic root of 402066771 is about 738.0731286000.

The spelling of 402066771 in words is "four hundred two million, sixty-six thousand, seven hundred seventy-one".