72700111 has 4 divisors (see below), whose sum is σ = 79309224. Its totient is φ = 66091000.

The previous prime is 72700091. The next prime is 72700123. The reversal of 72700111 is 11100727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11100727 = 11 ⋅1009157.

It is a cyclic number.

It is not a de Polignac number, because 72700111 - 2¹³ = 72691919 is a prime.

It is a super-2 number, since 2×72700111² = 10570612278824642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72706111) 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, 3304540 + ... + 3304561.

It is an arithmetic number, because the mean of its divisors is an integer number (19827306).

Almost surely, 2^72700111 is an apocalyptic number.

72700111 is a deficient number, since it is larger than the sum of its proper divisors (6609113).

72700111 is a wasteful number, since it uses less digits than its factorization.

72700111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609112.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 72700111 is about 8526.4360080868. The cubic root of 72700111 is about 417.3608337724.

Adding to 72700111 its reverse (11100727), we get a palindrome (83800838).

The spelling of 72700111 in words is "seventy-two million, seven hundred thousand, one hundred eleven".