245909688 has 16 divisors (see below), whose sum is σ = 614774280. Its totient is φ = 81969888.

The previous prime is 245909681. The next prime is 245909711. The reversal of 245909688 is 886909542.

It is a self number, because there is not a number n which added to its sum of digits gives 245909688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245909681) 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, 5123095 + ... + 5123142.

Almost surely, 2^245909688 is an apocalyptic number.

It is an amenable number.

245909688 is an abundant number, since it is smaller than the sum of its proper divisors (368864592).

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

245909688 is a wasteful number, since it uses less digits than its factorization.

245909688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246246 (or 10246242 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 245909688 is about 15681.5078356643. The cubic root of 245909688 is about 626.5059688049.

The spelling of 245909688 in words is "two hundred forty-five million, nine hundred nine thousand, six hundred eighty-eight".