72655703 has 4 divisors (see below), whose sum is σ = 72689760. Its totient is φ = 72621648.

The previous prime is 72655673. The next prime is 72655711. The reversal of 72655703 is 30755627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72655703 - 2⁸ = 72655447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72655733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13598 + ... + 18171.

It is an arithmetic number, because the mean of its divisors is an integer number (18172440).

Almost surely, 2^72655703 is an apocalyptic number.

72655703 is a deficient number, since it is larger than the sum of its proper divisors (34057).

72655703 is a wasteful number, since it uses less digits than its factorization.

72655703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34056.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 72655703 is about 8523.8314741670. The cubic root of 72655703 is about 417.2758364928.

The spelling of 72655703 in words is "seventy-two million, six hundred fifty-five thousand, seven hundred three".