2061640674 has 24 divisors (see below), whose sum is σ = 4632329520. Its totient is φ = 687213396.

The previous prime is 2061640661. The next prime is 2061640697. The reversal of 2061640674 is 4760461602.

2061640674 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 640 + 6 + 7 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2120544 + ... + 2121515.

It is an arithmetic number, because the mean of its divisors is an integer number (193013730).

Almost surely, 2^2061640674 is an apocalyptic number.

2061640674 is an abundant number, since it is smaller than the sum of its proper divisors (2570688846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2061640674 is an equidigital number, since it uses as much as digits as its factorization.

2061640674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242076 (or 4242064 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 2061640674 is about 45405.2934579218. The cubic root of 2061640674 is about 1272.7340347652.

The spelling of 2061640674 in words is "two billion, sixty-one million, six hundred forty thousand, six hundred seventy-four".