73666378 has 8 divisors (see below), whose sum is σ = 115303968. Its totient is φ = 35231724.

The previous prime is 73666361. The next prime is 73666387. The reversal of 73666378 is 87366637.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 1601443 = 73666378 / (7 + 3 + 6 + 6 + 6 + 3 + 7 + 8).

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 3 ways as a sum of consecutive naturals, for example, 800676 + ... + 800767.

It is an arithmetic number, because the mean of its divisors is an integer number (14412996).

Almost surely, 2^73666378 is an apocalyptic number.

73666378 is a deficient number, since it is larger than the sum of its proper divisors (41637590).

73666378 is a wasteful number, since it uses less digits than its factorization.

73666378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601468.

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

The square root of 73666378 is about 8582.9119767128. The cubic root of 73666378 is about 419.2017680823.

The spelling of 73666378 in words is "seventy-three million, six hundred sixty-six thousand, three hundred seventy-eight".