Search a number
-
+
70067047 = 174121591
BaseRepresentation
bin1000010110100…
…10001101100111
311212211202220211
410023102031213
5120414121142
610541440251
71510363051
oct413221547
9155752824
1070067047
1136607456
121b570087
13116931bb
14943c8d1
156240917
hex42d2367

70067047 has 4 divisors (see below), whose sum is σ = 74188656. Its totient is φ = 65945440.

The previous prime is 70067029. The next prime is 70067051. The reversal of 70067047 is 74076007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74076007 = 467158621.

It is a cyclic number.

It is not a de Polignac number, because 70067047 - 211 = 70064999 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70067027) 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, 2060779 + ... + 2060812.

It is an arithmetic number, because the mean of its divisors is an integer number (18547164).

Almost surely, 270067047 is an apocalyptic number.

70067047 is a deficient number, since it is larger than the sum of its proper divisors (4121609).

70067047 is a wasteful number, since it uses less digits than its factorization.

70067047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121608.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 70067047 is about 8370.6061309800. The cubic root of 70067047 is about 412.2600688577.

The spelling of 70067047 in words is "seventy million, sixty-seven thousand, forty-seven".

Divisors: 1 17 4121591 70067047