245666345 has 8 divisors (see below), whose sum is σ = 296952264. Its totient is φ = 195097984.

The previous prime is 245666341. The next prime is 245666417. The reversal of 245666345 is 543666542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 399424 + 245266921 = 632^2 + 15661^2 .

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 245666345 - 2² = 245666341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245666341) 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, 178634 + ... + 180003.

It is an arithmetic number, because the mean of its divisors is an integer number (37119033).

Almost surely, 2^245666345 is an apocalyptic number.

It is an amenable number.

245666345 is a deficient number, since it is larger than the sum of its proper divisors (51285919).

245666345 is a wasteful number, since it uses less digits than its factorization.

245666345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358779.

The product of its digits is 518400, while the sum is 41.

The square root of 245666345 is about 15673.7469993617. The cubic root of 245666345 is about 626.2992450017.

The spelling of 245666345 in words is "two hundred forty-five million, six hundred sixty-six thousand, three hundred forty-five".