742668 has 24 divisors (see below), whose sum is σ = 1747200. Its totient is φ = 245520.

The previous prime is 742663. The next prime is 742673. The reversal of 742668 is 866247.

It is an interprime number because it is at equal distance from previous prime (742663) and next prime (742673).

It is not an unprimeable number, because it can be changed into a prime (742663) by changing a digit.

742668 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, 2233 + ... + 2543.

It is an arithmetic number, because the mean of its divisors is an integer number (72800).

2⁷⁴²⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

742668 is an abundant number, since it is smaller than the sum of its proper divisors (1004532).

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

742668 is a wasteful number, since it uses less digits than its factorization.

742668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 742668 is about 861.7818749544. The cubic root of 742668 is about 90.5589900602.

The spelling of 742668 in words is "seven hundred forty-two thousand, six hundred sixty-eight".