2065366421 has 4 divisors (see below), whose sum is σ = 2066166144. Its totient is φ = 2064566700.

The previous prime is 2065366339. The next prime is 2065366453. The reversal of 2065366421 is 1246635602.

It is a happy number.

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 2065366421 - 2³⁰ = 991624597 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 (2065366621) 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, 395975 + ... + 401156.

It is an arithmetic number, because the mean of its divisors is an integer number (516541536).

Almost surely, 2^2065366421 is an apocalyptic number.

It is an amenable number.

2065366421 is a deficient number, since it is larger than the sum of its proper divisors (799723).

2065366421 is an equidigital number, since it uses as much as digits as its factorization.

2065366421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799722.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2065366421 is about 45446.3026108835. The cubic root of 2065366421 is about 1273.5002580719.

The spelling of 2065366421 in words is "two billion, sixty-five million, three hundred sixty-six thousand, four hundred twenty-one".