260678421 has 12 divisors (see below), whose sum is σ = 376750348. Its totient is φ = 173686464.

The previous prime is 260678413. The next prime is 260678449. The reversal of 260678421 is 124876062.

260678421 is a `hidden beast` number, since 2 + 606 + 7 + 8 + 42 + 1 = 666.

260678421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 170694225 + 89984196 = 13065^2 + 9486^2 .

It is not a de Polignac number, because 260678421 - 2³ = 260678413 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 (260678921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10671 + ... + 25203.

Almost surely, 2^260678421 is an apocalyptic number.

It is an amenable number.

260678421 is a deficient number, since it is larger than the sum of its proper divisors (116071927).

260678421 is a wasteful number, since it uses less digits than its factorization.

260678421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16532 (or 16529 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 260678421 is about 16145.5387336564. The cubic root of 260678421 is about 638.8050791515.

The spelling of 260678421 in words is "two hundred sixty million, six hundred seventy-eight thousand, four hundred twenty-one".