249998616 has 64 divisors (see below), whose sum is σ = 793651200. Its totient is φ = 71427744.

The previous prime is 249998587. The next prime is 249998627. The reversal of 249998616 is 616899942.

249998616 is a `hidden beast` number, since 2 + 499 + 98 + 61 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81160 + ... + 84183.

It is an arithmetic number, because the mean of its divisors is an integer number (12400800).

Almost surely, 2^249998616 is an apocalyptic number.

It is an amenable number.

249998616 is an abundant number, since it is smaller than the sum of its proper divisors (543652584).

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

249998616 is a wasteful number, since it uses less digits than its factorization.

249998616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165365 (or 165355 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 249998616 is about 15811.3445348585. The cubic root of 249998616 is about 629.9593624581.

The spelling of 249998616 in words is "two hundred forty-nine million, nine hundred ninety-eight thousand, six hundred sixteen".