9620020013 has 4 divisors (see below), whose sum is σ = 9620667420. Its totient is φ = 9619372608.

The previous prime is 9620020001. The next prime is 9620020127. The reversal of 9620020013 is 3100200269.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3433725604 + 6186294409 = 58598^2 + 78653^2 .

It is a cyclic number.

It is not a de Polignac number, because 9620020013 - 2⁶ = 9620019949 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 (9620020913) 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, 300878 + ... + 331311.

It is an arithmetic number, because the mean of its divisors is an integer number (2405166855).

Almost surely, 2^9620020013 is an apocalyptic number.

It is an amenable number.

9620020013 is a deficient number, since it is larger than the sum of its proper divisors (647407).

9620020013 is a wasteful number, since it uses less digits than its factorization.

9620020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647406.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 9620020013 is about 98081.7007040559. The cubic root of 9620020013 is about 2126.7935041139.

The spelling of 9620020013 in words is "nine billion, six hundred twenty million, twenty thousand, thirteen".