662750689 has 4 divisors (see below), whose sum is σ = 666719424. Its totient is φ = 658781956.

The previous prime is 662750653. The next prime is 662750731. The reversal of 662750689 is 986057266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 662750689 - 2¹³ = 662742497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662750639) 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 3 ways as a sum of consecutive naturals, for example, 1984117 + ... + 1984450.

It is an arithmetic number, because the mean of its divisors is an integer number (166679856).

Almost surely, 2^662750689 is an apocalyptic number.

It is an amenable number.

662750689 is a deficient number, since it is larger than the sum of its proper divisors (3968735).

662750689 is a wasteful number, since it uses less digits than its factorization.

662750689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968734.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 662750689 is about 25743.9447055031. The cubic root of 662750689 is about 871.8666439062.

The spelling of 662750689 in words is "six hundred sixty-two million, seven hundred fifty thousand, six hundred eighty-nine".