6820016739 has 8 divisors (see below), whose sum is σ = 9406919760. Its totient is φ = 4389895776.

The previous prime is 6820016737. The next prime is 6820016779. The reversal of 6820016739 is 9376100286.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6820016739 - 2¹ = 6820016737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6820016739.

It is not an unprimeable number, because it can be changed into a prime (6820016737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39195412 + ... + 39195585.

It is an arithmetic number, because the mean of its divisors is an integer number (1175864970).

Almost surely, 2^6820016739 is an apocalyptic number.

6820016739 is a deficient number, since it is larger than the sum of its proper divisors (2586903021).

6820016739 is a wasteful number, since it uses less digits than its factorization.

6820016739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78391029.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 6820016739 is about 82583.3926343548. The cubic root of 6820016739 is about 1896.3935965720.

The spelling of 6820016739 in words is "six billion, eight hundred twenty million, sixteen thousand, seven hundred thirty-nine".