662650969 has 2 divisors, whose sum is σ = 662650970. Its totient is φ = 662650968.

The previous prime is 662650951. The next prime is 662650981. The reversal of 662650969 is 969056266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439447369 + 223203600 = 20963^2 + 14940^2 .

It is a cyclic number.

It is not a de Polignac number, because 662650969 - 2¹³ = 662642777 is a prime.

It is a super-2 number, since 2×662650969² = 878212613433277922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (662650069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331325484 + 331325485.

It is an arithmetic number, because the mean of its divisors is an integer number (331325485).

Almost surely, 2^662650969 is an apocalyptic number.

It is an amenable number.

662650969 is a deficient number, since it is larger than the sum of its proper divisors (1).

662650969 is an equidigital number, since it uses as much as digits as its factorization.

662650969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 662650969 is about 25742.0078665204. The cubic root of 662650969 is about 871.8229135844.

The spelling of 662650969 in words is "six hundred sixty-two million, six hundred fifty thousand, nine hundred sixty-nine".