742550066 has 4 divisors (see below), whose sum is σ = 1113825102. Its totient is φ = 371275032.

The previous prime is 742550063. The next prime is 742550119. The reversal of 742550066 is 660055247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 723879025 + 18671041 = 26905^2 + 4321^2 .

It is not an unprimeable number, because it can be changed into a prime (742550063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185637515 + ... + 185637518.

Almost surely, 2^742550066 is an apocalyptic number.

742550066 is a deficient number, since it is larger than the sum of its proper divisors (371275036).

742550066 is a wasteful number, since it uses less digits than its factorization.

742550066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371275035.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 742550066 is about 27249.7718522559. The cubic root of 742550066 is about 905.5419628546.

The spelling of 742550066 in words is "seven hundred forty-two million, five hundred fifty thousand, sixty-six".