4065621047 has 8 divisors (see below), whose sum is σ = 4161334944. Its totient is φ = 3970988928.

The previous prime is 4065621031. The next prime is 4065621071. The reversal of 4065621047 is 7401265604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4065621047 - 2⁴ = 4065621031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4065620998 and 4065621016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065629047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262838 + ... + 277875.

It is an arithmetic number, because the mean of its divisors is an integer number (520166868).

Almost surely, 2^4065621047 is an apocalyptic number.

4065621047 is a deficient number, since it is larger than the sum of its proper divisors (95713897).

4065621047 is a wasteful number, since it uses less digits than its factorization.

4065621047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540889.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 4065621047 is about 63762.2227263134. Note that the first 3 decimals coincide. The cubic root of 4065621047 is about 1596.0345874702.

The spelling of 4065621047 in words is "four billion, sixty-five million, six hundred twenty-one thousand, forty-seven".