72752066 has 8 divisors (see below), whose sum is σ = 109307964. Its totient is φ = 36316080.

The previous prime is 72752051. The next prime is 72752089. The reversal of 72752066 is 66025727.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48594841 + 24157225 = 6971^2 + 4915^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28445 + ... + 30896.

Almost surely, 2^72752066 is an apocalyptic number.

72752066 is a deficient number, since it is larger than the sum of its proper divisors (36555898).

72752066 is a wasteful number, since it uses less digits than its factorization.

72752066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59956.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 72752066 is about 8529.4821648210. The cubic root of 72752066 is about 417.4602321475.

The spelling of 72752066 in words is "seventy-two million, seven hundred fifty-two thousand, sixty-six".