669750575 has 24 divisors (see below), whose sum is σ = 898380000. Its totient is φ = 492370560.

The previous prime is 669750541. The next prime is 669750577. The reversal of 669750575 is 575057966.

It is a happy number.

It is not a de Polignac number, because 669750575 - 2²² = 665556271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669750577) 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 in 23 ways as a sum of consecutive naturals, for example, 69926 + ... + 78924.

It is an arithmetic number, because the mean of its divisors is an integer number (37432500).

Almost surely, 2^669750575 is an apocalyptic number.

669750575 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

669750575 is a deficient number, since it is larger than the sum of its proper divisors (228629425).

669750575 is a wasteful number, since it uses less digits than its factorization.

669750575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9251 (or 9246 counting only the distinct ones).

The product of its (nonzero) digits is 1984500, while the sum is 50.

The square root of 669750575 is about 25879.5396983795. The cubic root of 669750575 is about 874.9254140506.

The spelling of 669750575 in words is "six hundred sixty-nine million, seven hundred fifty thousand, five hundred seventy-five".