7820622064 has 90 divisors (see below), whose sum is σ = 16362692304. Its totient is φ = 3620298240.

The previous prime is 7820622041. The next prime is 7820622079. The reversal of 7820622064 is 4602260287.

It is a super-2 number, since 2×7820622064² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28858249 + ... + 28858519.

Almost surely, 2^7820622064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7820622064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8181346152).

7820622064 is an abundant number, since it is smaller than the sum of its proper divisors (8542070240).

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

7820622064 is a wasteful number, since it uses less digits than its factorization.

7820622064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 7820622064 is about 88434.2810453050. The cubic root of 7820622064 is about 1984.9387020305.

The spelling of 7820622064 in words is "seven billion, eight hundred twenty million, six hundred twenty-two thousand, sixty-four".