613703421 has 6 divisors (see below), whose sum is σ = 886460510. Its totient is φ = 409135608.

The previous prime is 613703413. The next prime is 613703449. The reversal of 613703421 is 124307316.

613703421 is a `hidden beast` number, since 613 + 7 + 0 + 3 + 42 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 471497796 + 142205625 = 21714^2 + 11925^2 .

It is not a de Polignac number, because 613703421 - 2³ = 613703413 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 (613703471) 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 5 ways as a sum of consecutive naturals, for example, 34094626 + ... + 34094643.

Almost surely, 2^613703421 is an apocalyptic number.

It is an amenable number.

613703421 is a deficient number, since it is larger than the sum of its proper divisors (272757089).

613703421 is a wasteful number, since it uses less digits than its factorization.

613703421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68189275 (or 68189272 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 613703421 is about 24773.0381867061. The cubic root of 613703421 is about 849.8054553614.

The spelling of 613703421 in words is "six hundred thirteen million, seven hundred three thousand, four hundred twenty-one".