2420820613 has 4 divisors (see below), whose sum is σ = 2421416448. Its totient is φ = 2420224780.

The previous prime is 2420820599. The next prime is 2420820637. The reversal of 2420820613 is 3160280242.

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.

It is a cyclic number.

It is not a de Polignac number, because 2420820613 - 2⁵ = 2420820581 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 (2420820643) 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, 291781 + ... + 299962.

It is an arithmetic number, because the mean of its divisors is an integer number (605354112).

Almost surely, 2^2420820613 is an apocalyptic number.

It is an amenable number.

2420820613 is a deficient number, since it is larger than the sum of its proper divisors (595835).

2420820613 is an equidigital number, since it uses as much as digits as its factorization.

2420820613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595834.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2420820613 is about 49201.8354637304. The cubic root of 2420820613 is about 1342.7264257955.

The spelling of 2420820613 in words is "two billion, four hundred twenty million, eight hundred twenty thousand, six hundred thirteen".