662750069 has 2 divisors, whose sum is σ = 662750070. Its totient is φ = 662750068.

The previous prime is 662750057. The next prime is 662750111. The reversal of 662750069 is 960057266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658179025 + 4571044 = 25655^2 + 2138^2 .

It is a cyclic number.

It is not a de Polignac number, because 662750069 - 2²⁰ = 661701493 is a prime.

It is a super-2 number, since 2×662750069² = 878475307919009522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662750029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331375034 + 331375035.

It is an arithmetic number, because the mean of its divisors is an integer number (331375035).

Almost surely, 2^662750069 is an apocalyptic number.

It is an amenable number.

662750069 is a deficient number, since it is larger than the sum of its proper divisors (1).

662750069 is an equidigital number, since it uses as much as digits as its factorization.

662750069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 662750069 is about 25743.9326638336. The cubic root of 662750069 is about 871.8663720304.

The spelling of 662750069 in words is "six hundred sixty-two million, seven hundred fifty thousand, sixty-nine".