2669930621 has 4 divisors (see below), whose sum is σ = 2670051552. Its totient is φ = 2669809692.

The previous prime is 2669930611. The next prime is 2669930629. The reversal of 2669930621 is 1260399662.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1260399662 = 2 ⋅630199831.

It is a cyclic number.

It is not a de Polignac number, because 2669930621 - 2¹⁴ = 2669914237 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 (2669930629) 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, 16871 + ... + 74996.

It is an arithmetic number, because the mean of its divisors is an integer number (667512888).

Almost surely, 2^2669930621 is an apocalyptic number.

It is an amenable number.

2669930621 is a deficient number, since it is larger than the sum of its proper divisors (120931).

2669930621 is an equidigital number, since it uses as much as digits as its factorization.

2669930621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120930.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 2669930621 is about 51671.3713868715. The cubic root of 2669930621 is about 1387.2880929092.

The spelling of 2669930621 in words is "two billion, six hundred sixty-nine million, nine hundred thirty thousand, six hundred twenty-one".