6650620431 has 96 divisors (see below), whose sum is σ = 11472115200. Its totient is φ = 3336657408.

The previous prime is 6650620411. The next prime is 6650620511. The reversal of 6650620431 is 1340260566.

It is not a de Polignac number, because 6650620431 - 2¹³ = 6650612239 is a prime.

It is a super-2 number, since 2×6650620431² = 88461504234469251522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6650620392 and 6650620401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650620411) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19056045 + ... + 19056393.

It is an arithmetic number, because the mean of its divisors is an integer number (119501200).

Almost surely, 2^6650620431 is an apocalyptic number.

6650620431 is a deficient number, since it is larger than the sum of its proper divisors (4821494769).

6650620431 is a wasteful number, since it uses less digits than its factorization.

6650620431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 6650620431 is about 81551.3361693112. The cubic root of 6650620431 is about 1880.5608360527.

Adding to 6650620431 its reverse (1340260566), we get a palindrome (7990880997).

The spelling of 6650620431 in words is "six billion, six hundred fifty million, six hundred twenty thousand, four hundred thirty-one".