683413021 has 4 divisors (see below), whose sum is σ = 685828192. Its totient is φ = 680997852.

The previous prime is 683413019. The next prime is 683413057. The reversal of 683413021 is 120314386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120314386 = 2 ⋅60157193.

It is a cyclic number.

It is not a de Polignac number, because 683413021 - 2¹ = 683413019 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 (683413001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207161 + ... + 1207726.

It is an arithmetic number, because the mean of its divisors is an integer number (171457048).

Almost surely, 2^683413021 is an apocalyptic number.

It is an amenable number.

683413021 is a deficient number, since it is larger than the sum of its proper divisors (2415171).

683413021 is a wasteful number, since it uses less digits than its factorization.

683413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415170.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 683413021 is about 26142.1694011802. The cubic root of 683413021 is about 880.8347025893.

The spelling of 683413021 in words is "six hundred eighty-three million, four hundred thirteen thousand, twenty-one".