248776661 has 8 divisors (see below), whose sum is σ = 284469120. Its totient is φ = 213122448.

The previous prime is 248776639. The next prime is 248776667. The reversal of 248776661 is 166677842.

It is a happy number.

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

It is not a de Polignac number, because 248776661 - 2¹⁴ = 248760277 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 (248776667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6095 + ... + 23123.

It is an arithmetic number, because the mean of its divisors is an integer number (35558640).

Almost surely, 2^248776661 is an apocalyptic number.

It is an amenable number.

248776661 is a deficient number, since it is larger than the sum of its proper divisors (35692459).

248776661 is a wasteful number, since it uses less digits than its factorization.

248776661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19123.

The product of its digits is 677376, while the sum is 47.

The square root of 248776661 is about 15772.6554834625. The cubic root of 248776661 is about 628.9313039644.

The spelling of 248776661 in words is "two hundred forty-eight million, seven hundred seventy-six thousand, six hundred sixty-one".