73724668 has 6 divisors (see below), whose sum is σ = 129018176. Its totient is φ = 36862332.

The previous prime is 73724659. The next prime is 73724669. The reversal of 73724668 is 86642737.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73724669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9215580 + ... + 9215587.

Almost surely, 2^73724668 is an apocalyptic number.

It is an amenable number.

73724668 is a deficient number, since it is larger than the sum of its proper divisors (55293508).

73724668 is a wasteful number, since it uses less digits than its factorization.

73724668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18431171 (or 18431169 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 73724668 is about 8586.3070059252. The cubic root of 73724668 is about 419.3123062029.

The spelling of 73724668 in words is "seventy-three million, seven hundred twenty-four thousand, six hundred sixty-eight".