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64332541 = 7213234391
BaseRepresentation
bin1111010101101…
…0001011111101
311111001102122201
43311122023331
5112432120131
610214511501
71410550300
oct365321375
9144042581
1064332541
113334aa99
1219665591
1310435cc0
148788b37
1559ab761
hex3d5a2fd

64332541 has 24 divisors (see below), whose sum is σ = 84115584. Its totient is φ = 48676320.

The previous prime is 64332523. The next prime is 64332547. The reversal of 64332541 is 14523346.

It is not a de Polignac number, because 64332541 - 25 = 64332509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64332547) 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 23 ways as a sum of consecutive naturals, for example, 12456 + ... + 16846.

It is an arithmetic number, because the mean of its divisors is an integer number (3504816).

Almost surely, 264332541 is an apocalyptic number.

It is an amenable number.

64332541 is a deficient number, since it is larger than the sum of its proper divisors (19783043).

64332541 is a wasteful number, since it uses less digits than its factorization.

64332541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441 (or 4434 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 64332541 is about 8020.7568844842. The cubic root of 64332541 is about 400.6915972938.

Adding to 64332541 its reverse (14523346), we get a palindrome (78855887).

The spelling of 64332541 in words is "sixty-four million, three hundred thirty-two thousand, five hundred forty-one".

Divisors: 1 7 13 23 49 91 161 299 637 1127 2093 4391 14651 30737 57083 100993 215159 399581 706951 1312909 2797067 4948657 9190363 64332541