72601733 has 4 divisors (see below), whose sum is σ = 74563980. Its totient is φ = 70639488.

The previous prime is 72601723. The next prime is 72601751. The reversal of 72601733 is 33710627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33710627 = 487 ⋅69221.

It can be written as a sum of positive squares in 2 ways, for example, as 69772609 + 2829124 = 8353^2 + 1682^2 .

It is a cyclic number.

It is not a de Polignac number, because 72601733 - 2¹⁴ = 72585349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72601696 and 72601705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72601723) 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 3 ways as a sum of consecutive naturals, for example, 981068 + ... + 981141.

It is an arithmetic number, because the mean of its divisors is an integer number (18640995).

Almost surely, 2^72601733 is an apocalyptic number.

It is an amenable number.

72601733 is a deficient number, since it is larger than the sum of its proper divisors (1962247).

72601733 is a wasteful number, since it uses less digits than its factorization.

72601733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962246.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 72601733 is about 8520.6650562031. The cubic root of 72601733 is about 417.1724908299.

The spelling of 72601733 in words is "seventy-two million, six hundred one thousand, seven hundred thirty-three".