8621072377 has 2 divisors, whose sum is σ = 8621072378. Its totient is φ = 8621072376.

The previous prime is 8621072321. The next prime is 8621072399. The reversal of 8621072377 is 7732701268.

8621072377 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6838628416 + 1782443961 = 82696^2 + 42219^2 .

It is a cyclic number.

It is not a de Polignac number, because 8621072377 - 2¹¹ = 8621070329 is a prime.

It is a super-3 number, since 3×8621072377³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (8621072777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4310536188 + 4310536189.

It is an arithmetic number, because the mean of its divisors is an integer number (4310536189).

Almost surely, 2^8621072377 is an apocalyptic number.

It is an amenable number.

8621072377 is a deficient number, since it is larger than the sum of its proper divisors (1).

8621072377 is an equidigital number, since it uses as much as digits as its factorization.

8621072377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 8621072377 is about 92849.7300857682. The cubic root of 8621072377 is about 2050.4716247433.

The spelling of 8621072377 in words is "eight billion, six hundred twenty-one million, seventy-two thousand, three hundred seventy-seven".