245779998 has 8 divisors (see below), whose sum is σ = 491560008. Its totient is φ = 81926664.

The previous prime is 245779993. The next prime is 245780009. The reversal of 245779998 is 899977542.

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

245779998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245779993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20481661 + ... + 20481672.

It is an arithmetic number, because the mean of its divisors is an integer number (61445001).

Almost surely, 2^245779998 is an apocalyptic number.

245779998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

245779998 is a wasteful number, since it uses less digits than its factorization.

245779998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40963338.

The product of its digits is 11430720, while the sum is 60.

The square root of 245779998 is about 15677.3721650027. The cubic root of 245779998 is about 626.3958120401.

The spelling of 245779998 in words is "two hundred forty-five million, seven hundred seventy-nine thousand, nine hundred ninety-eight".