662074549 has 2 divisors, whose sum is σ = 662074550. Its totient is φ = 662074548.

The previous prime is 662074547. The next prime is 662074583. The reversal of 662074549 is 945470266.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342916324 + 319158225 = 18518^2 + 17865^2 .

It is a cyclic number.

It is not a de Polignac number, because 662074549 - 2¹ = 662074547 is a prime.

Together with 662074547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662074547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331037274 + 331037275.

It is an arithmetic number, because the mean of its divisors is an integer number (331037275).

Almost surely, 2^662074549 is an apocalyptic number.

It is an amenable number.

662074549 is a deficient number, since it is larger than the sum of its proper divisors (1).

662074549 is an equidigital number, since it uses as much as digits as its factorization.

662074549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 662074549 is about 25730.8093343369. The cubic root of 662074549 is about 871.5700494717.

It can be divided in two parts, 66207 and 4549, that added together give a square (70756 = 266²).

The spelling of 662074549 in words is "six hundred sixty-two million, seventy-four thousand, five hundred forty-nine".