248778655 has 8 divisors (see below), whose sum is σ = 301490784. Its totient is φ = 197052000.

The previous prime is 248778631. The next prime is 248778659. The reversal of 248778655 is 556877842.

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

It is not a de Polignac number, because 248778655 - 2¹¹ = 248776607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248778659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245811 + ... + 246820.

It is an arithmetic number, because the mean of its divisors is an integer number (37686348).

Almost surely, 2^248778655 is an apocalyptic number.

248778655 is a deficient number, since it is larger than the sum of its proper divisors (52712129).

248778655 is a wasteful number, since it uses less digits than its factorization.

248778655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492737.

The product of its digits is 3763200, while the sum is 52.

The square root of 248778655 is about 15772.7186939982. The cubic root of 248778655 is about 628.9329843011.

The spelling of 248778655 in words is "two hundred forty-eight million, seven hundred seventy-eight thousand, six hundred fifty-five".