72641061 has 24 divisors (see below), whose sum is σ = 112047936. Its totient is φ = 45239040.

The previous prime is 72641011. The next prime is 72641071. The reversal of 72641061 is 16014627.

It is not a de Polignac number, because 72641061 - 2¹³ = 72632869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72641011) 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 23 ways as a sum of consecutive naturals, for example, 4821 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (4668664).

Almost surely, 2^72641061 is an apocalyptic number.

It is an amenable number.

72641061 is a deficient number, since it is larger than the sum of its proper divisors (39406875).

72641061 is a wasteful number, since it uses less digits than its factorization.

72641061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8233 (or 8230 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 72641061 is about 8522.9725448343. The cubic root of 72641061 is about 417.2478039915.

Adding to 72641061 its reverse (16014627), we get a palindrome (88655688).

The spelling of 72641061 in words is "seventy-two million, six hundred forty-one thousand, sixty-one".