248420691 has 6 divisors (see below), whose sum is σ = 358829900. Its totient is φ = 165613788.

The previous prime is 248420651. The next prime is 248420707. The reversal of 248420691 is 196024842.

It is not a de Polignac number, because 248420691 - 2¹⁹ = 247896403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248420651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13801141 + ... + 13801158.

Almost surely, 2^248420691 is an apocalyptic number.

248420691 is a deficient number, since it is larger than the sum of its proper divisors (110409209).

248420691 is a wasteful number, since it uses less digits than its factorization.

248420691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27602305 (or 27602302 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 248420691 is about 15761.3670409644. The cubic root of 248420691 is about 628.6311853190.

The spelling of 248420691 in words is "two hundred forty-eight million, four hundred twenty thousand, six hundred ninety-one".