8737238661 has 8 divisors (see below), whose sum is σ = 11651364864. Its totient is φ = 5823969120.

The previous prime is 8737238647. The next prime is 8737238663. The reversal of 8737238661 is 1668327378.

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

It is not a de Polignac number, because 8737238661 - 2⁷ = 8737238533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8737238663) 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, 189976 + ... + 231441.

It is an arithmetic number, because the mean of its divisors is an integer number (1456420608).

Almost surely, 2^8737238661 is an apocalyptic number.

It is an amenable number.

8737238661 is a deficient number, since it is larger than the sum of its proper divisors (2914126203).

8737238661 is a wasteful number, since it uses less digits than its factorization.

8737238661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428331.

The product of its digits is 2032128, while the sum is 51.

The square root of 8737238661 is about 93473.1975541652. The cubic root of 8737238661 is about 2059.6403888088.

The spelling of 8737238661 in words is "eight billion, seven hundred thirty-seven million, two hundred thirty-eight thousand, six hundred sixty-one".