307913645 has 8 divisors (see below), whose sum is σ = 397919256. Its totient is φ = 227382336.

The previous prime is 307913633. The next prime is 307913651. The reversal of 307913645 is 546319703.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48413764 + 259499881 = 6958^2 + 16109^2 .

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 307913645 - 2¹⁶ = 307848109 is a prime.

It is a super-3 number, since 3×307913645³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 307913599 and 307913608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2368502 + ... + 2368631.

It is an arithmetic number, because the mean of its divisors is an integer number (49739907).

Almost surely, 2^307913645 is an apocalyptic number.

It is an amenable number.

307913645 is a deficient number, since it is larger than the sum of its proper divisors (90005611).

307913645 is a wasteful number, since it uses less digits than its factorization.

307913645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737151.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 307913645 is about 17547.4683359167. The cubic root of 307913645 is about 675.2682207937.

The spelling of 307913645 in words is "three hundred seven million, nine hundred thirteen thousand, six hundred forty-five".