669037 has 4 divisors (see below), whose sum is σ = 684640. Its totient is φ = 653436.

The previous prime is 669029. The next prime is 669049. The reversal of 669037 is 730966.

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 669037 - 2³ = 669029 is a prime.

It is a super-2 number, since 2×669037² = 895221014738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7737 + ... + 7822.

It is an arithmetic number, because the mean of its divisors is an integer number (171160).

2⁶⁶⁹⁰³⁷ is an apocalyptic number.

It is an amenable number.

669037 is a deficient number, since it is larger than the sum of its proper divisors (15603).

669037 is a wasteful number, since it uses less digits than its factorization.

669037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15602.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 669037 is about 817.9468197872. The cubic root of 669037 is about 87.4614578553.

The spelling of 669037 in words is "six hundred sixty-nine thousand, thirty-seven".