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70727 = 107661

70727 has 4 divisors (see below), whose sum is σ = 71496. Its totient is φ = 69960.

The previous prime is 70717. The next prime is 70729. The reversal of 70727 is 72707.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 70727 - 26 = 70663 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 70727.

It is not an unprimeable number, because it can be changed into a prime (70729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224 + ... + 437.

It is an arithmetic number, because the mean of its divisors is an integer number (17874).

270727 is an apocalyptic number.

70727 is a deficient number, since it is larger than the sum of its proper divisors (769).

70727 is a wasteful number, since it uses less digits than its factorization.

70727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its (nonzero) digits is 686, while the sum is 23.

The square root of 70727 is about 265.9454831352. The cubic root of 70727 is about 41.3550368733.

It can be divided in two parts, 70 and 727, that added together give a palindrome (797).

The spelling of 70727 in words is "seventy thousand, seven hundred twenty-seven", and thus it is an iban number.

Divisors: 1 107 661 70727