4636065421 has 4 divisors (see below), whose sum is σ = 4992685852. Its totient is φ = 4279444992.

The previous prime is 4636065377. The next prime is 4636065431. The reversal of 4636065421 is 1245606364.

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 1088076196 + 3547989225 = 32986^2 + 59565^2 .

It is a cyclic number.

It is not a de Polignac number, because 4636065421 - 2¹³ = 4636057229 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 (4636065431) 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, 178310196 + ... + 178310221.

It is an arithmetic number, because the mean of its divisors is an integer number (1248171463).

Almost surely, 2^4636065421 is an apocalyptic number.

It is an amenable number.

4636065421 is a deficient number, since it is larger than the sum of its proper divisors (356620431).

4636065421 is a wasteful number, since it uses less digits than its factorization.

4636065421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356620430.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 4636065421 is about 68088.6585342963. The cubic root of 4636065421 is about 1667.4386040435.

The spelling of 4636065421 in words is "four billion, six hundred thirty-six million, sixty-five thousand, four hundred twenty-one".