6420761807 has 8 divisors (see below), whose sum is σ = 6823731600. Its totient is φ = 6020600704.

The previous prime is 6420761783. The next prime is 6420761833. The reversal of 6420761807 is 7081670246.

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

It is a cyclic number.

It is not a de Polignac number, because 6420761807 - 2¹⁰ = 6420760783 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 (6420761107) 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, 697457 + ... + 706602.

It is an arithmetic number, because the mean of its divisors is an integer number (852966450).

Almost surely, 2^6420761807 is an apocalyptic number.

6420761807 is a deficient number, since it is larger than the sum of its proper divisors (402969793).

6420761807 is a wasteful number, since it uses less digits than its factorization.

6420761807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404345.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 6420761807 is about 80129.6562266431. The cubic root of 6420761807 is about 1858.6410282829.

The spelling of 6420761807 in words is "six billion, four hundred twenty million, seven hundred sixty-one thousand, eight hundred seven".