Search a number
-
+
68419037 = 411668757
BaseRepresentation
bin1000001001111…
…11110111011101
311202202001021102
410010333313131
5120003402122
610442242445
71460360261
oct404776735
9152661242
1068419037
1135691265
121aab6425
131123704b
1491300a1
156017492
hex413fddd

68419037 has 4 divisors (see below), whose sum is σ = 70087836. Its totient is φ = 66750240.

The previous prime is 68419027. The next prime is 68419093. The reversal of 68419037 is 73091486.

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 1653796 + 66765241 = 1286^2 + 8171^2 .

It is a cyclic number.

It is not a de Polignac number, because 68419037 - 28 = 68418781 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 (68419027) 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, 834338 + ... + 834419.

It is an arithmetic number, because the mean of its divisors is an integer number (17521959).

Almost surely, 268419037 is an apocalyptic number.

It is an amenable number.

68419037 is a deficient number, since it is larger than the sum of its proper divisors (1668799).

68419037 is a wasteful number, since it uses less digits than its factorization.

68419037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668798.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 68419037 is about 8271.5800787999. The cubic root of 68419037 is about 409.0022078499.

The spelling of 68419037 in words is "sixty-eight million, four hundred nineteen thousand, thirty-seven".

Divisors: 1 41 1668757 68419037