6420528935 has 8 divisors (see below), whose sum is σ = 7813151136. Its totient is φ = 5064078880.

The previous prime is 6420528871. The next prime is 6420528937. The reversal of 6420528935 is 5398250246.

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

It is not a de Polignac number, because 6420528935 - 2⁶ = 6420528871 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 (6420528937) 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, 9042644 + ... + 9043353.

It is an arithmetic number, because the mean of its divisors is an integer number (976643892).

Almost surely, 2^6420528935 is an apocalyptic number.

6420528935 is a deficient number, since it is larger than the sum of its proper divisors (1392622201).

6420528935 is a wasteful number, since it uses less digits than its factorization.

6420528935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18086073.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 6420528935 is about 80128.2031185025. The cubic root of 6420528935 is about 1858.6185579126.

The spelling of 6420528935 in words is "six billion, four hundred twenty million, five hundred twenty-eight thousand, nine hundred thirty-five".