248426666 has 4 divisors (see below), whose sum is σ = 372640002. Its totient is φ = 124213332.

The previous prime is 248426617. The next prime is 248426671. The reversal of 248426666 is 666624842.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 130074025 + 118352641 = 11405^2 + 10879^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62106665 + ... + 62106668.

Almost surely, 2^248426666 is an apocalyptic number.

248426666 is a deficient number, since it is larger than the sum of its proper divisors (124213336).

248426666 is a wasteful number, since it uses less digits than its factorization.

248426666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124213335.

The product of its digits is 663552, while the sum is 44.

The square root of 248426666 is about 15761.5565855660. The cubic root of 248426666 is about 628.6362252121.

The spelling of 248426666 in words is "two hundred forty-eight million, four hundred twenty-six thousand, six hundred sixty-six".