8306651645 has 4 divisors (see below), whose sum is σ = 9967981980. Its totient is φ = 6645321312.

The previous prime is 8306651611. The next prime is 8306651651. The reversal of 8306651645 is 5461566038.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5943330649 + 2363320996 = 77093^2 + 48614^2 .

It is a cyclic number.

It is not a de Polignac number, because 8306651645 - 2¹² = 8306647549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8306651596 and 8306651605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830665160 + ... + 830665169.

It is an arithmetic number, because the mean of its divisors is an integer number (2491995495).

Almost surely, 2^8306651645 is an apocalyptic number.

It is an amenable number.

8306651645 is a deficient number, since it is larger than the sum of its proper divisors (1661330335).

8306651645 is a wasteful number, since it uses less digits than its factorization.

8306651645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661330334.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 8306651645 is about 91140.8341249958. The cubic root of 8306651645 is about 2025.2345728366.

The spelling of 8306651645 in words is "eight billion, three hundred six million, six hundred fifty-one thousand, six hundred forty-five".