8619712477 has 2 divisors, whose sum is σ = 8619712478. Its totient is φ = 8619712476.

The previous prime is 8619712457. The next prime is 8619712483. The reversal of 8619712477 is 7742179168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7145997156 + 1473715321 = 84534^2 + 38389^2 .

It is a cyclic number.

It is not a de Polignac number, because 8619712477 - 2²⁷ = 8485494749 is a prime.

It is a super-2 number, since 2×8619712477² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8619712417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4309856238 + 4309856239.

It is an arithmetic number, because the mean of its divisors is an integer number (4309856239).

Almost surely, 2^8619712477 is an apocalyptic number.

It is an amenable number.

8619712477 is a deficient number, since it is larger than the sum of its proper divisors (1).

8619712477 is an equidigital number, since it uses as much as digits as its factorization.

8619712477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 52.

The square root of 8619712477 is about 92842.4066738901. The cubic root of 8619712477 is about 2050.3638043210.

The spelling of 8619712477 in words is "eight billion, six hundred nineteen million, seven hundred twelve thousand, four hundred seventy-seven".