2074654661 has 4 divisors (see below), whose sum is σ = 2093688300. Its totient is φ = 2055621024.

The previous prime is 2074654651. The next prime is 2074654663. The reversal of 2074654661 is 1664564702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1664564702 = 2 ⋅832282351.

It can be written as a sum of positive squares in 2 ways, for example, as 1537110436 + 537544225 = 39206^2 + 23185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2074654661 - 2⁶ = 2074654597 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 (2074654663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9516656 + ... + 9516873.

It is an arithmetic number, because the mean of its divisors is an integer number (523422075).

Almost surely, 2^2074654661 is an apocalyptic number.

It is an amenable number.

2074654661 is a deficient number, since it is larger than the sum of its proper divisors (19033639).

2074654661 is a wasteful number, since it uses less digits than its factorization.

2074654661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19033638.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 2074654661 is about 45548.3771500149. The cubic root of 2074654661 is about 1275.4064393838.

The spelling of 2074654661 in words is "two billion, seventy-four million, six hundred fifty-four thousand, six hundred sixty-one".