6422685520 has 40 divisors (see below), whose sum is σ = 15718681440. Its totient is φ = 2433859200.

The previous prime is 6422685509. The next prime is 6422685557. The reversal of 6422685520 is 255862246.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111206 + ... + 2114245.

It is an arithmetic number, because the mean of its divisors is an integer number (392967036).

Almost surely, 2^6422685520 is an apocalyptic number.

It is an amenable number.

6422685520 is an abundant number, since it is smaller than the sum of its proper divisors (9295995920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6422685520 is a wasteful number, since it uses less digits than its factorization.

6422685520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225483 (or 4225477 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 6422685520 is about 80141.6590794076. The cubic root of 6422685520 is about 1858.8266311233.

The spelling of 6422685520 in words is "six billion, four hundred twenty-two million, six hundred eighty-five thousand, five hundred twenty".