72655546 has 8 divisors (see below), whose sum is σ = 109168884. Its totient is φ = 36265920.

The previous prime is 72655511. The next prime is 72655549. The reversal of 72655546 is 64555627.

It can be written as a sum of positive squares in 2 ways, for example, as 71825625 + 829921 = 8475^2 + 911^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 72655499 and 72655508.

It is not an unprimeable number, because it can be changed into a prime (72655549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29445 + ... + 31816.

Almost surely, 2^72655546 is an apocalyptic number.

72655546 is a deficient number, since it is larger than the sum of its proper divisors (36513338).

72655546 is a wasteful number, since it uses less digits than its factorization.

72655546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61856.

The product of its digits is 252000, while the sum is 40.

The square root of 72655546 is about 8523.8222646885. The cubic root of 72655546 is about 417.2755359321.

The spelling of 72655546 in words is "seventy-two million, six hundred fifty-five thousand, five hundred forty-six".