669772 has 6 divisors (see below), whose sum is σ = 1172108. Its totient is φ = 334884.

The previous prime is 669763. The next prime is 669787. The reversal of 669772 is 277966.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83718 + ... + 83725.

2⁶⁶⁹⁷⁷² is an apocalyptic number.

It is an amenable number.

669772 is a deficient number, since it is larger than the sum of its proper divisors (502336).

669772 is a wasteful number, since it uses less digits than its factorization.

669772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167447 (or 167445 counting only the distinct ones).

The product of its digits is 31752, while the sum is 37.

The square root of 669772 is about 818.3959921700. The cubic root of 669772 is about 87.4934743433.

It can be divided in two parts, 669 and 772, that added together give a palindrome (1441).

The spelling of 669772 in words is "six hundred sixty-nine thousand, seven hundred seventy-two".