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64212041 = 73879617
BaseRepresentation
bin1111010011110…
…0110001001001
311110211022100202
43310330301021
5112414241131
610212141545
71406536055
oct364746111
9143738322
1064212041
1133278503
12196078b5
13103c31ba
148756c65
155985bcb
hex3d3cc49

64212041 has 4 divisors (see below), whose sum is σ = 65091732. Its totient is φ = 63332352.

The previous prime is 64212007. The next prime is 64212047. The reversal of 64212041 is 14021246.

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 30525625 + 33686416 = 5525^2 + 5804^2 .

It is a cyclic number.

It is not a de Polignac number, because 64212041 - 214 = 64195657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64212047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439736 + ... + 439881.

It is an arithmetic number, because the mean of its divisors is an integer number (16272933).

Almost surely, 264212041 is an apocalyptic number.

It is an amenable number.

64212041 is a deficient number, since it is larger than the sum of its proper divisors (879691).

64212041 is an equidigital number, since it uses as much as digits as its factorization.

64212041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879690.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 64212041 is about 8013.2416037456. The cubic root of 64212041 is about 400.4412651171.

Adding to 64212041 its reverse (14021246), we get a palindrome (78233287).

The spelling of 64212041 in words is "sixty-four million, two hundred twelve thousand, forty-one".

Divisors: 1 73 879617 64212041