72600818 has 4 divisors (see below), whose sum is σ = 108901230. Its totient is φ = 36300408.

The previous prime is 72600809. The next prime is 72600823. The reversal of 72600818 is 81800627.

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., 43256929 + 29343889 = 6577^2 + 5417^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18150203 + ... + 18150206.

Almost surely, 2^72600818 is an apocalyptic number.

72600818 is a deficient number, since it is larger than the sum of its proper divisors (36300412).

72600818 is a wasteful number, since it uses less digits than its factorization.

72600818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36300411.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 72600818 is about 8520.6113630420. The cubic root of 72600818 is about 417.1707382802.

The spelling of 72600818 in words is "seventy-two million, six hundred thousand, eight hundred eighteen".