745554 has 16 divisors (see below), whose sum is σ = 1503648. Its totient is φ = 246432.

The previous prime is 745543. The next prime is 745567. The reversal of 745554 is 455547.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 745554.

It is an unprimeable number.

745554 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, 369 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (93978).

2⁷⁴⁵⁵⁵⁴ is an apocalyptic number.

745554 is an abundant number, since it is smaller than the sum of its proper divisors (758094).

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

745554 is a wasteful number, since it uses less digits than its factorization.

745554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049.

The product of its digits is 14000, while the sum is 30.

The square root of 745554 is about 863.4546890254. The cubic root of 745554 is about 90.6761421998.

The spelling of 745554 in words is "seven hundred forty-five thousand, five hundred fifty-four".