3264645421 has 4 divisors (see below), whose sum is σ = 3269645532. Its totient is φ = 3259645312.

The previous prime is 3264645413. The next prime is 3264645431. The reversal of 3264645421 is 1245464623.

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 506925225 + 2757720196 = 22515^2 + 52514^2 .

It is a cyclic number.

It is not a de Polignac number, because 3264645421 - 2³ = 3264645413 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 (3264645431) 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, 2499076 + ... + 2500381.

It is an arithmetic number, because the mean of its divisors is an integer number (817411383).

Almost surely, 2^3264645421 is an apocalyptic number.

It is an amenable number.

3264645421 is a deficient number, since it is larger than the sum of its proper divisors (5000111).

3264645421 is an equidigital number, since it uses as much as digits as its factorization.

3264645421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000110.

The product of its digits is 138240, while the sum is 37.

The square root of 3264645421 is about 57137.0757127104. The cubic root of 3264645421 is about 1483.4696748921.

The spelling of 3264645421 in words is "three billion, two hundred sixty-four million, six hundred forty-five thousand, four hundred twenty-one".