81060607 has 4 divisors (see below), whose sum is σ = 85828896. Its totient is φ = 76292320.

The previous prime is 81060589. The next prime is 81060611. The reversal of 81060607 is 70606018.

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

It is a cyclic number.

It is not a de Polignac number, because 81060607 - 2¹¹ = 81058559 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 (81060667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2384119 + ... + 2384152.

It is an arithmetic number, because the mean of its divisors is an integer number (21457224).

Almost surely, 2^81060607 is an apocalyptic number.

81060607 is a deficient number, since it is larger than the sum of its proper divisors (4768289).

81060607 is a wasteful number, since it uses less digits than its factorization.

81060607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768288.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 81060607 is about 9003.3664259542. The cubic root of 81060607 is about 432.7827582868.

The spelling of 81060607 in words is "eighty-one million, sixty thousand, six hundred seven".