72655653 has 16 divisors (see below), whose sum is σ = 110888960. Its totient is φ = 41451696.

The previous prime is 72655577. The next prime is 72655657. The reversal of 72655653 is 35655627.

It is not a de Polignac number, because 72655653 - 2⁸ = 72655397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72655657) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12888 + ... + 17646.

It is an arithmetic number, because the mean of its divisors is an integer number (6930560).

Almost surely, 2^72655653 is an apocalyptic number.

It is an amenable number.

72655653 is a deficient number, since it is larger than the sum of its proper divisors (38233307).

72655653 is a wasteful number, since it uses less digits than its factorization.

72655653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496.

The product of its digits is 189000, while the sum is 39.

The square root of 72655653 is about 8523.8285412132. The cubic root of 72655653 is about 417.2757407729.

The spelling of 72655653 in words is "seventy-two million, six hundred fifty-five thousand, six hundred fifty-three".