275636997 has 12 divisors (see below), whose sum is σ = 421562700. Its totient is φ = 172948608.

The previous prime is 275636993. The next prime is 275637001. The reversal of 275636997 is 799636572.

275636997 is a `hidden beast` number, since 275 + 6 + 369 + 9 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (275636993) and next prime (275637001).

It can be written as a sum of positive squares in 2 ways, for example, as 81703521 + 193933476 = 9039^2 + 13926^2 .

It is not a de Polignac number, because 275636997 - 2² = 275636993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275636993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 900622 + ... + 900927.

It is an arithmetic number, because the mean of its divisors is an integer number (35130225).

Almost surely, 2^275636997 is an apocalyptic number.

It is an amenable number.

275636997 is a deficient number, since it is larger than the sum of its proper divisors (145925703).

275636997 is a wasteful number, since it uses less digits than its factorization.

275636997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801572 (or 1801569 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 54.

The square root of 275636997 is about 16602.3190247628. The cubic root of 275636997 is about 650.7974409974.

The spelling of 275636997 in words is "two hundred seventy-five million, six hundred thirty-six thousand, nine hundred ninety-seven".