72759641 has 4 divisors (see below), whose sum is σ = 73952484. Its totient is φ = 71566800.

The previous prime is 72759623. The next prime is 72759653. The reversal of 72759641 is 14695727.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39639616 + 33120025 = 6296^2 + 5755^2 .

It is a cyclic number.

It is not a de Polignac number, because 72759641 - 2¹⁰ = 72758617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72759671) 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, 596330 + ... + 596451.

It is an arithmetic number, because the mean of its divisors is an integer number (18488121).

Almost surely, 2^72759641 is an apocalyptic number.

It is an amenable number.

72759641 is a deficient number, since it is larger than the sum of its proper divisors (1192843).

72759641 is a wasteful number, since it uses less digits than its factorization.

72759641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192842.

The product of its digits is 105840, while the sum is 41.

The square root of 72759641 is about 8529.9262013220. The cubic root of 72759641 is about 417.4747204027.

The spelling of 72759641 in words is "seventy-two million, seven hundred fifty-nine thousand, six hundred forty-one".