72658735 has 4 divisors (see below), whose sum is σ = 87190488. Its totient is φ = 58126984.

The previous prime is 72658721. The next prime is 72658739. The reversal of 72658735 is 53785627.

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 72658735 - 2¹⁵ = 72625967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72658691 and 72658700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72658739) 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, 7265869 + ... + 7265878.

It is an arithmetic number, because the mean of its divisors is an integer number (21797622).

Almost surely, 2^72658735 is an apocalyptic number.

72658735 is a deficient number, since it is larger than the sum of its proper divisors (14531753).

72658735 is a wasteful number, since it uses less digits than its factorization.

72658735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14531752.

The product of its digits is 352800, while the sum is 43.

The square root of 72658735 is about 8524.0093266021. The cubic root of 72658735 is about 417.2816408674.

The spelling of 72658735 in words is "seventy-two million, six hundred fifty-eight thousand, seven hundred thirty-five".