4002646061 has 4 divisors (see below), whose sum is σ = 4012628124. Its totient is φ = 3992664000.

The previous prime is 4002646057. The next prime is 4002646097. The reversal of 4002646061 is 1606462004.

4002646061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3348821161 + 653824900 = 57869^2 + 25570^2 .

It is a cyclic number.

It is not a de Polignac number, because 4002646061 - 2² = 4002646057 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 (4002646031) 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, 4990430 + ... + 4991231.

It is an arithmetic number, because the mean of its divisors is an integer number (1003157031).

Almost surely, 2^4002646061 is an apocalyptic number.

It is an amenable number.

4002646061 is a deficient number, since it is larger than the sum of its proper divisors (9982063).

4002646061 is an equidigital number, since it uses as much as digits as its factorization.

4002646061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9982062.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 4002646061 is about 63266.4686939298. The cubic root of 4002646061 is about 1587.7510048144.

The spelling of 4002646061 in words is "four billion, two million, six hundred forty-six thousand, sixty-one".