28617697 has 2 divisors, whose sum is σ = 28617698. Its totient is φ = 28617696.

The previous prime is 28617649. The next prime is 28617707. The reversal of 28617697 is 79671682.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16777216 + 11840481 = 4096^2 + 3441^2 .

It is a cyclic number.

It is not a de Polignac number, because 28617697 - 2⁷ = 28617569 is a prime.

It is not a weakly prime, because it can be changed into another prime (28617397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14308848 + 14308849.

It is an arithmetic number, because the mean of its divisors is an integer number (14308849).

Almost surely, 2^28617697 is an apocalyptic number.

It is an amenable number.

28617697 is a deficient number, since it is larger than the sum of its proper divisors (1).

28617697 is an equidigital number, since it uses as much as digits as its factorization.

28617697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 28617697 is about 5349.5511026627. The cubic root of 28617697 is about 305.8756418653.

The spelling of 28617697 in words is "twenty-eight million, six hundred seventeen thousand, six hundred ninety-seven".