660412 has 6 divisors (see below), whose sum is σ = 1155728. Its totient is φ = 330204.

The previous prime is 660409. The next prime is 660449. The reversal of 660412 is 214066.

660412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×660412² = 872288019488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 660412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82548 + ... + 82555.

2⁶⁶⁰⁴¹² is an apocalyptic number.

It is an amenable number.

660412 is a deficient number, since it is larger than the sum of its proper divisors (495316).

660412 is a wasteful number, since it uses less digits than its factorization.

660412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165107 (or 165105 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 660412 is about 812.6573693753. The cubic root of 660412 is about 87.0839898813.

Adding to 660412 its reverse (214066), we get a palindrome (874478).

The spelling of 660412 in words is "six hundred sixty thousand, four hundred twelve".