245391678 has 48 divisors (see below), whose sum is σ = 628598880. Its totient is φ = 67693248.

The previous prime is 245391673. The next prime is 245391697. The reversal of 245391678 is 876193542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245391673) 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 23 ways as a sum of consecutive naturals, for example, 29925 + ... + 37232.

It is an arithmetic number, because the mean of its divisors is an integer number (13095810).

Almost surely, 2^245391678 is an apocalyptic number.

245391678 is an abundant number, since it is smaller than the sum of its proper divisors (383207202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245391678 is a wasteful number, since it uses less digits than its factorization.

245391678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67201 (or 67198 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 245391678 is about 15664.9825406861. The cubic root of 245391678 is about 626.0657468874.

The spelling of 245391678 in words is "two hundred forty-five million, three hundred ninety-one thousand, six hundred seventy-eight".