450678 has 16 divisors (see below), whose sum is σ = 930816. Its totient is φ = 145320.

The previous prime is 450677. The next prime is 450691. The reversal of 450678 is 876054.

It is a happy number.

It is a super-2 number, since 2×450678² = 406221319368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450677) 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, 1026 + ... + 1397.

It is an arithmetic number, because the mean of its divisors is an integer number (58176).

2⁴⁵⁰⁶⁷⁸ is an apocalyptic number.

450678 is an abundant number, since it is smaller than the sum of its proper divisors (480138).

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

450678 is a wasteful number, since it uses less digits than its factorization.

450678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 450678 is about 671.3255544071. The cubic root of 450678 is about 76.6694096897.

It can be divided in two parts, 450 and 678, that added together give a triangular number (1128 = T₄₇).

The spelling of 450678 in words is "four hundred fifty thousand, six hundred seventy-eight".