80148661 has 4 divisors (see below), whose sum is σ = 80171692. Its totient is φ = 80125632.

The previous prime is 80148641. The next prime is 80148703. The reversal of 80148661 is 16684108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34586161 + 45562500 = 5881^2 + 6750^2 .

It is a cyclic number.

It is not a de Polignac number, because 80148661 - 2¹¹ = 80146613 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 (80148641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5106 + ... + 13651.

It is an arithmetic number, because the mean of its divisors is an integer number (20042923).

Almost surely, 2^80148661 is an apocalyptic number.

It is an amenable number.

80148661 is a deficient number, since it is larger than the sum of its proper divisors (23031).

80148661 is a wasteful number, since it uses less digits than its factorization.

80148661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23030.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 80148661 is about 8952.5784553948. The cubic root of 80148661 is about 431.1536731994.

The spelling of 80148661 in words is "eighty million, one hundred forty-eight thousand, six hundred sixty-one".