4072643621 has 8 divisors (see below), whose sum is σ = 4103628480. Its totient is φ = 4041750592.

The previous prime is 4072643599. The next prime is 4072643657. The reversal of 4072643621 is 1263462704.

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 4072643621 - 2¹⁰ = 4072642597 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 (4072643221) 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 7 ways as a sum of consecutive naturals, for example, 67421 + ... + 112653.

It is an arithmetic number, because the mean of its divisors is an integer number (512953560).

Almost surely, 2^4072643621 is an apocalyptic number.

It is an amenable number.

4072643621 is a deficient number, since it is larger than the sum of its proper divisors (30984859).

4072643621 is a wasteful number, since it uses less digits than its factorization.

4072643621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45915.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 4072643621 is about 63817.2674203464. The cubic root of 4072643621 is about 1596.9530058930.

The spelling of 4072643621 in words is "four billion, seventy-two million, six hundred forty-three thousand, six hundred twenty-one".