8238290661 has 24 divisors (see below), whose sum is σ = 12640852224. Its totient is φ = 5152256640.

The previous prime is 8238290657. The next prime is 8238290663. The reversal of 8238290661 is 1660928328.

It is not a de Polignac number, because 8238290661 - 2² = 8238290657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8238290663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40725 + ... + 134666.

It is an arithmetic number, because the mean of its divisors is an integer number (526702176).

Almost surely, 2^8238290661 is an apocalyptic number.

It is an amenable number.

8238290661 is a deficient number, since it is larger than the sum of its proper divisors (4402561563).

8238290661 is a wasteful number, since it uses less digits than its factorization.

8238290661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175721 (or 175718 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 8238290661 is about 90765.0299454586. The cubic root of 8238290661 is about 2019.6635930489.

The spelling of 8238290661 in words is "eight billion, two hundred thirty-eight million, two hundred ninety thousand, six hundred sixty-one".