28600669 has 2 divisors, whose sum is σ = 28600670. Its totient is φ = 28600668.

The previous prime is 28600591. The next prime is 28600679. The reversal of 28600669 is 96600682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27688644 + 912025 = 5262^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 28600669 - 2⁷ = 28600541 is a prime.

It is a super-2 number, since 2×28600669² = 1635996534495122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28600679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300334 + 14300335.

It is an arithmetic number, because the mean of its divisors is an integer number (14300335).

Almost surely, 2^28600669 is an apocalyptic number.

It is an amenable number.

28600669 is a deficient number, since it is larger than the sum of its proper divisors (1).

28600669 is an equidigital number, since it uses as much as digits as its factorization.

28600669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 28600669 is about 5347.9593304362. The cubic root of 28600669 is about 305.8149628176.

The spelling of 28600669 in words is "twenty-eight million, six hundred thousand, six hundred sixty-nine".