245606421 has 8 divisors (see below), whose sum is σ = 327749184. Its totient is φ = 163600640.

The previous prime is 245606381. The next prime is 245606453. The reversal of 245606421 is 124606542.

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 245606421 - 2⁶ = 245606357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245656421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29985 + ... + 37286.

It is an arithmetic number, because the mean of its divisors is an integer number (40968648).

Almost surely, 2^245606421 is an apocalyptic number.

It is an amenable number.

245606421 is a deficient number, since it is larger than the sum of its proper divisors (82142763).

245606421 is a wasteful number, since it uses less digits than its factorization.

245606421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68491.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 245606421 is about 15671.8352786137. The cubic root of 245606421 is about 626.2483176516.

The spelling of 245606421 in words is "two hundred forty-five million, six hundred six thousand, four hundred twenty-one".