4066062821 has 4 divisors (see below), whose sum is σ = 4134979200. Its totient is φ = 3997146444.

The previous prime is 4066062761. The next prime is 4066062823. The reversal of 4066062821 is 1282606604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4066062821 - 2¹⁸ = 4065800677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066062823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34458101 + ... + 34458218.

It is an arithmetic number, because the mean of its divisors is an integer number (1033744800).

Almost surely, 2^4066062821 is an apocalyptic number.

It is an amenable number.

4066062821 is a deficient number, since it is larger than the sum of its proper divisors (68916379).

4066062821 is an equidigital number, since it uses as much as digits as its factorization.

4066062821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68916378.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 4066062821 is about 63765.6868621361. The cubic root of 4066062821 is about 1596.0923942225.

The spelling of 4066062821 in words is "four billion, sixty-six million, sixty-two thousand, eight hundred twenty-one".