72773066 has 4 divisors (see below), whose sum is σ = 109159602. Its totient is φ = 36386532.

The previous prime is 72773053. The next prime is 72773147. The reversal of 72773066 is 66037727.

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., 66667225 + 6105841 = 8165^2 + 2471^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18193265 + ... + 18193268.

Almost surely, 2^72773066 is an apocalyptic number.

72773066 is a deficient number, since it is larger than the sum of its proper divisors (36386536).

72773066 is a wasteful number, since it uses less digits than its factorization.

72773066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36386535.

The product of its (nonzero) digits is 74088, while the sum is 38.

The square root of 72773066 is about 8530.7131003217. The cubic root of 72773066 is about 417.5003951375.

The spelling of 72773066 in words is "seventy-two million, seven hundred seventy-three thousand, sixty-six".