742566 has 16 divisors (see below), whose sum is σ = 1620288. Its totient is φ = 225000.

The previous prime is 742559. The next prime is 742579. The reversal of 742566 is 665247.

742566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

742566 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, 5560 + ... + 5691.

It is an arithmetic number, because the mean of its divisors is an integer number (101268).

742566 is a Friedman number, since it can be written as ((7+6)^5-6-4)*2, using all its digits and the basic arithmetic operations.

2⁷⁴²⁵⁶⁶ is an apocalyptic number.

742566 is an abundant number, since it is smaller than the sum of its proper divisors (877722).

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

742566 is a wasteful number, since it uses less digits than its factorization.

742566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11267.

The product of its digits is 10080, while the sum is 30.

The square root of 742566 is about 861.7226932140. The cubic root of 742566 is about 90.5548439995.

The spelling of 742566 in words is "seven hundred forty-two thousand, five hundred sixty-six".