742211666 has 8 divisors (see below), whose sum is σ = 1272362880. Its totient is φ = 318090708.

The previous prime is 742211663. The next prime is 742211683. The reversal of 742211666 is 666112247.

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

It is not an unprimeable number, because it can be changed into a prime (742211663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26507546 + ... + 26507573.

It is an arithmetic number, because the mean of its divisors is an integer number (159045360).

Almost surely, 2^742211666 is an apocalyptic number.

742211666 is a deficient number, since it is larger than the sum of its proper divisors (530151214).

742211666 is a wasteful number, since it uses less digits than its factorization.

742211666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53015128.

The product of its digits is 24192, while the sum is 35.

The square root of 742211666 is about 27243.5619183689. The cubic root of 742211666 is about 905.4043820250.

The spelling of 742211666 in words is "seven hundred forty-two million, two hundred eleven thousand, six hundred sixty-six".