920609345 has 8 divisors (see below), whose sum is σ = 1107573480. Its totient is φ = 734592640.

The previous prime is 920609341. The next prime is 920609353. The reversal of 920609345 is 543906029.

920609345 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 198021184 + 722588161 = 14072^2 + 26881^2 .

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

It is not a de Polignac number, because 920609345 - 2² = 920609341 is a prime.

It is a super-2 number, since 2×920609345² = 1695043132202658050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 920609299 and 920609308.

It is not an unprimeable number, because it can be changed into a prime (920609341) 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, 234716 + ... + 238605.

It is an arithmetic number, because the mean of its divisors is an integer number (138446685).

Almost surely, 2^920609345 is an apocalyptic number.

It is an amenable number.

920609345 is a deficient number, since it is larger than the sum of its proper divisors (186964135).

920609345 is a wasteful number, since it uses less digits than its factorization.

920609345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473715.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 920609345 is about 30341.5448683814. The cubic root of 920609345 is about 972.8035042423.

The spelling of 920609345 in words is "nine hundred twenty million, six hundred nine thousand, three hundred forty-five".