662496091 has 2 divisors, whose sum is σ = 662496092. Its totient is φ = 662496090.

The previous prime is 662496089. The next prime is 662496127. The reversal of 662496091 is 190694266.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662496091 - 2¹ = 662496089 is a prime.

Together with 662496089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (662496011) 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, 331248045 + 331248046.

It is an arithmetic number, because the mean of its divisors is an integer number (331248046).

Almost surely, 2^662496091 is an apocalyptic number.

662496091 is a deficient number, since it is larger than the sum of its proper divisors (1).

662496091 is an equidigital number, since it uses as much as digits as its factorization.

662496091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 662496091 is about 25738.9994172268. Note that the first 3 decimals coincide. The cubic root of 662496091 is about 871.7549860647.

The spelling of 662496091 in words is "six hundred sixty-two million, four hundred ninety-six thousand, ninety-one".