745446 has 32 divisors (see below), whose sum is σ = 1693440. Its totient is φ = 216864.

The previous prime is 745397. The next prime is 745471. The reversal of 745446 is 644547.

745446 = 189² + 190² + ... + 207².

745446 is nontrivially palindromic in base 5.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231 + ... + 1733.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2⁷⁴⁵⁴⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846720).

745446 is an abundant number, since it is smaller than the sum of its proper divisors (947994).

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

745446 is a wasteful number, since it uses less digits than its factorization.

745446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its digits is 13440, while the sum is 30.

The square root of 745446 is about 863.3921472888. The cubic root of 745446 is about 90.6717635783.

The spelling of 745446 in words is "seven hundred forty-five thousand, four hundred forty-six".