72441077 has 4 divisors (see below), whose sum is σ = 72524556. Its totient is φ = 72357600.

The previous prime is 72441071. The next prime is 72441113. The reversal of 72441077 is 77014427.

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 41460721 + 30980356 = 6439^2 + 5566^2 .

It is a cyclic number.

It is not a de Polignac number, because 72441077 - 2⁶ = 72441013 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 (72441071) 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, 40424 + ... + 42177.

It is an arithmetic number, because the mean of its divisors is an integer number (18131139).

Almost surely, 2^72441077 is an apocalyptic number.

It is an amenable number.

72441077 is a deficient number, since it is larger than the sum of its proper divisors (83479).

72441077 is an equidigital number, since it uses as much as digits as its factorization.

72441077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83478.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 72441077 is about 8511.2324019498. The cubic root of 72441077 is about 416.8645516226.

The spelling of 72441077 in words is "seventy-two million, four hundred forty-one thousand, seventy-seven".