742609689 has 8 divisors (see below), whose sum is σ = 991043520. Its totient is φ = 494624496.

The previous prime is 742609633. The next prime is 742609723. The reversal of 742609689 is 986906247.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 742609689 - 2⁷ = 742609561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742609489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108277 + ... + 114930.

It is an arithmetic number, because the mean of its divisors is an integer number (123880440).

Almost surely, 2^742609689 is an apocalyptic number.

It is an amenable number.

742609689 is a deficient number, since it is larger than the sum of its proper divisors (248433831).

742609689 is a wasteful number, since it uses less digits than its factorization.

742609689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224319.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 742609689 is about 27250.8658394555. The cubic root of 742609689 is about 905.5661990131.

The spelling of 742609689 in words is "seven hundred forty-two million, six hundred nine thousand, six hundred eighty-nine".