273445645 has 8 divisors (see below), whose sum is σ = 357965280. Its totient is φ = 198869520.

The previous prime is 273445631. The next prime is 273445721. The reversal of 273445645 is 546544372.

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

It is a de Polignac number, because none of the positive numbers 2^k-273445645 is a prime.

It is a super-3 number, since 3×273445645³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 273445598 and 273445607.

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, 2485815 + ... + 2485924.

It is an arithmetic number, because the mean of its divisors is an integer number (44745660).

Almost surely, 2^273445645 is an apocalyptic number.

It is an amenable number.

273445645 is a deficient number, since it is larger than the sum of its proper divisors (84519635).

273445645 is a wasteful number, since it uses less digits than its factorization.

273445645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971755.

The product of its digits is 403200, while the sum is 40.

The square root of 273445645 is about 16536.1919739703. The cubic root of 273445645 is about 649.0682072944.

The spelling of 273445645 in words is "two hundred seventy-three million, four hundred forty-five thousand, six hundred forty-five".