6650731 has 2 divisors, whose sum is σ = 6650732. Its totient is φ = 6650730.

The previous prime is 6650729. The next prime is 6650737. The reversal of 6650731 is 1370566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6650731 - 2¹ = 6650729 is a prime.

It is a super-2 number, since 2×6650731² = 88464445668722, which contains 22 as substring.

Together with 6650729, it forms a pair of twin primes.

6650731 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6650731.

It is not a weakly prime, because it can be changed into another prime (6650737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325365 + 3325366.

It is an arithmetic number, because the mean of its divisors is an integer number (3325366).

Almost surely, 2^6650731 is an apocalyptic number.

6650731 is a deficient number, since it is larger than the sum of its proper divisors (1).

6650731 is an equidigital number, since it uses as much as digits as its factorization.

6650731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 6650731 is about 2578.9011225714. The cubic root of 6650731 is about 188.0571257666.

It can be divided in two parts, 6650 and 731, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 6650731 in words is "six million, six hundred fifty thousand, seven hundred thirty-one".