8237723821 has 8 divisors (see below), whose sum is σ = 8252115264. Its totient is φ = 8223346560.

The previous prime is 8237723807. The next prime is 8237723849. The reversal of 8237723821 is 1283277328.

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 8237723821 - 2⁷ = 8237723693 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 (8237723891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2043610 + ... + 2047636.

It is an arithmetic number, because the mean of its divisors is an integer number (1031514408).

Almost surely, 2^8237723821 is an apocalyptic number.

It is an amenable number.

8237723821 is a deficient number, since it is larger than the sum of its proper divisors (14391443).

8237723821 is a wasteful number, since it uses less digits than its factorization.

8237723821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091.

The product of its digits is 225792, while the sum is 43.

The square root of 8237723821 is about 90761.9073235022. The cubic root of 8237723821 is about 2019.6172706415.

The spelling of 8237723821 in words is "eight billion, two hundred thirty-seven million, seven hundred twenty-three thousand, eight hundred twenty-one".