73666738 has 4 divisors (see below), whose sum is σ = 110500110. Its totient is φ = 36833368.

The previous prime is 73666657. The next prime is 73666753. The reversal of 73666738 is 83766637.

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., 57562569 + 16104169 = 7587^2 + 4013^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18416683 + ... + 18416686.

Almost surely, 2^73666738 is an apocalyptic number.

73666738 is a deficient number, since it is larger than the sum of its proper divisors (36833372).

73666738 is a wasteful number, since it uses less digits than its factorization.

73666738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36833371.

The product of its digits is 762048, while the sum is 46.

The square root of 73666738 is about 8582.9329485905. The cubic root of 73666738 is about 419.2024509464.

The spelling of 73666738 in words is "seventy-three million, six hundred sixty-six thousand, seven hundred thirty-eight".