661476 has 24 divisors (see below), whose sum is σ = 1556800. Its totient is φ = 218592.

The previous prime is 661459. The next prime is 661477. The reversal of 661476 is 674166.

661476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 661476.

It is not an unprimeable number, because it can be changed into a prime (661477) by changing a digit.

661476 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2250 + ... + 2526.

2⁶⁶¹⁴⁷⁶ is an apocalyptic number.

It is an amenable number.

661476 is an abundant number, since it is smaller than the sum of its proper divisors (895324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

661476 is a wasteful number, since it uses less digits than its factorization.

661476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 481 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 661476 is about 813.3117483475. The cubic root of 661476 is about 87.1307322427.

The spelling of 661476 in words is "six hundred sixty-one thousand, four hundred seventy-six".