72061871 has 8 divisors (see below), whose sum is σ = 82429344. Its totient is φ = 61712640.

The previous prime is 72061841. The next prime is 72061879. The reversal of 72061871 is 17816027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72061871 - 2¹⁰ = 72060847 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 (72061879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5351 + ... + 13143.

It is an arithmetic number, because the mean of its divisors is an integer number (10303668).

Almost surely, 2^72061871 is an apocalyptic number.

72061871 is a deficient number, since it is larger than the sum of its proper divisors (10367473).

72061871 is a wasteful number, since it uses less digits than its factorization.

72061871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9121.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 72061871 is about 8488.9263749899. The cubic root of 72061871 is about 416.1358942584.

Adding to 72061871 its reverse (17816027), we get a palindrome (89877898).

The spelling of 72061871 in words is "seventy-two million, sixty-one thousand, eight hundred seventy-one".