245231643 has 8 divisors (see below), whose sum is σ = 327114000. Its totient is φ = 163418528.

The previous prime is 245231639. The next prime is 245231659. The reversal of 245231643 is 346132542.

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 245231643 - 2² = 245231639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245231643.

It is not an unprimeable number, because it can be changed into a prime (245231633) 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, 8388 + ... + 23681.

It is an arithmetic number, because the mean of its divisors is an integer number (40889250).

Almost surely, 2^245231643 is an apocalyptic number.

245231643 is a deficient number, since it is larger than the sum of its proper divisors (81882357).

245231643 is a wasteful number, since it uses less digits than its factorization.

245231643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34621.

The product of its digits is 17280, while the sum is 30.

The square root of 245231643 is about 15659.8736584942. The cubic root of 245231643 is about 625.9296186358.

The spelling of 245231643 in words is "two hundred forty-five million, two hundred thirty-one thousand, six hundred forty-three".