72697255 has 8 divisors (see below), whose sum is σ = 88465824. Its totient is φ = 57338400.

The previous prime is 72697243. The next prime is 72697259. The reversal of 72697255 is 55279627.

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

It is not a de Polignac number, because 72697255 - 2¹³ = 72689063 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 (72697259) 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 7 ways as a sum of consecutive naturals, for example, 102036 + ... + 102745.

It is an arithmetic number, because the mean of its divisors is an integer number (11058228).

Almost surely, 2^72697255 is an apocalyptic number.

72697255 is a deficient number, since it is larger than the sum of its proper divisors (15768569).

72697255 is a wasteful number, since it uses less digits than its factorization.

72697255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204857.

The product of its digits is 264600, while the sum is 43.

The square root of 72697255 is about 8526.2685273219. The cubic root of 72697255 is about 417.3553684064.

The spelling of 72697255 in words is "seventy-two million, six hundred ninety-seven thousand, two hundred fifty-five".