453690 has 36 divisors (see below), whose sum is σ = 1196442. Its totient is φ = 119280.

The previous prime is 453683. The next prime is 453703. The reversal of 453690 is 96354.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 408321 + 45369 = 639^2 + 213^2 .

It is a super-2 number, since 2×453690² = 411669232200, which contains 22 as substring.

It is an unprimeable number.

453690 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 17 ways as a sum of consecutive naturals, for example, 6355 + ... + 6425.

2⁴⁵³⁶⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 453690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598221).

453690 is an abundant number, since it is smaller than the sum of its proper divisors (742752).

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

453690 is a wasteful number, since it uses less digits than its factorization.

453690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 453690 is about 673.5651416159. The cubic root of 453690 is about 76.8398312266.

Multiplying 453690 by its product of nonzero digits (3240), we get a square (1469955600 = 38340²).

The spelling of 453690 in words is "four hundred fifty-three thousand, six hundred ninety".