661452 has 24 divisors (see below), whose sum is σ = 1684032. Its totient is φ = 200400.

The previous prime is 661439. The next prime is 661459. The reversal of 661452 is 254166.

661452 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 661452.

It is not an unprimeable number, because it can be changed into a prime (661459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2374 + ... + 2637.

It is an arithmetic number, because the mean of its divisors is an integer number (70168).

2⁶⁶¹⁴⁵² is an apocalyptic number.

It is an amenable number.

661452 is an abundant number, since it is smaller than the sum of its proper divisors (1022580).

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

661452 is a wasteful number, since it uses less digits than its factorization.

661452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029 (or 5027 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 661452 is about 813.2969937237. The cubic root of 661452 is about 87.1296784565.

It can be divided in two parts, 6614 and 52, that added together give a palindrome (6666).

The spelling of 661452 in words is "six hundred sixty-one thousand, four hundred fifty-two".