73737666 has 12 divisors (see below), whose sum is σ = 159764982. Its totient is φ = 24579216.

The previous prime is 73737649. The next prime is 73737683. The reversal of 73737666 is 66673737.

It is an interprime number because it is at equal distance from previous prime (73737649) and next prime (73737683).

It can be written as a sum of positive squares in only one way, i.e., 73462041 + 275625 = 8571^2 + 525^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2048251 + ... + 2048286.

Almost surely, 2^73737666 is an apocalyptic number.

73737666 is an abundant number, since it is smaller than the sum of its proper divisors (86027316).

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

73737666 is a wasteful number, since it uses less digits than its factorization.

73737666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4096545 (or 4096542 counting only the distinct ones).

The product of its digits is 666792, while the sum is 45.

The square root of 73737666 is about 8587.0638753884. The cubic root of 73737666 is about 419.3369469879.

The spelling of 73737666 in words is "seventy-three million, seven hundred thirty-seven thousand, six hundred sixty-six".