2066405061 has 32 divisors (see below), whose sum is σ = 3180054528. Its totient is φ = 1169144640.

The previous prime is 2066405057. The next prime is 2066405071. The reversal of 2066405061 is 1605046602.

It is not a de Polignac number, because 2066405061 - 2² = 2066405057 is a prime.

It is a super-2 number, since 2×2066405061² = 8540059752252827442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066405041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1026546 + ... + 1028556.

It is an arithmetic number, because the mean of its divisors is an integer number (99376704).

Almost surely, 2^2066405061 is an apocalyptic number.

2066405061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2066405061 is a deficient number, since it is larger than the sum of its proper divisors (1113649467).

2066405061 is a wasteful number, since it uses less digits than its factorization.

2066405061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2066405061 is about 45457.7282868381. The cubic root of 2066405061 is about 1273.7136966549.

The spelling of 2066405061 in words is "two billion, sixty-six million, four hundred five thousand, sixty-one".