920232661 has 8 divisors (see below), whose sum is σ = 1000698840. Its totient is φ = 842692608.

The previous prime is 920232653. The next prime is 920232683. The reversal of 920232661 is 166232029.

It can be written as a sum of positive squares in 4 ways, for example, as 410872900 + 509359761 = 20270^2 + 22569^2 .

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 920232661 - 2³ = 920232653 is a prime.

It is a super-2 number, since 2×920232661² = 1693656300742281842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920232601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730876 + ... + 732133.

It is an arithmetic number, because the mean of its divisors is an integer number (125087355).

Almost surely, 2^920232661 is an apocalyptic number.

It is an amenable number.

920232661 is a deficient number, since it is larger than the sum of its proper divisors (80466179).

920232661 is a wasteful number, since it uses less digits than its factorization.

920232661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463063.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 920232661 is about 30335.3368367651. The cubic root of 920232661 is about 972.6708060799.

The spelling of 920232661 in words is "nine hundred twenty million, two hundred thirty-two thousand, six hundred sixty-one".