8220470631 has 16 divisors (see below), whose sum is σ = 11589258240. Its totient is φ = 5168586240.

The previous prime is 8220470627. The next prime is 8220470639. The reversal of 8220470631 is 1360740228.

It is not a de Polignac number, because 8220470631 - 2² = 8220470627 is a prime.

It is a super-2 number, since 2×8220470631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8220470592 and 8220470601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220470639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310650 + ... + 336071.

It is an arithmetic number, because the mean of its divisors is an integer number (724328640).

Almost surely, 2^8220470631 is an apocalyptic number.

8220470631 is a deficient number, since it is larger than the sum of its proper divisors (3368787609).

8220470631 is a wasteful number, since it uses less digits than its factorization.

8220470631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646966.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 8220470631 is about 90666.8110777036. The cubic root of 8220470631 is about 2018.2063147315.

The spelling of 8220470631 in words is "eight billion, two hundred twenty million, four hundred seventy thousand, six hundred thirty-one".