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64433343 = 3131652137
BaseRepresentation
bin1111010111001…
…0110010111111
311111020112221010
43311302302333
5112443331333
610221010303
71411450212
oct365626277
9144215833
1064433343
11334097a7
12196b3993
131046cb50
1487b3779
1559cb563
hex3d72cbf

64433343 has 8 divisors (see below), whose sum is σ = 92519728. Its totient is φ = 39651264.

The previous prime is 64433333. The next prime is 64433359. The reversal of 64433343 is 34333446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64433343 - 28 = 64433087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64433343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64433333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826030 + ... + 826107.

It is an arithmetic number, because the mean of its divisors is an integer number (11564966).

Almost surely, 264433343 is an apocalyptic number.

64433343 is a deficient number, since it is larger than the sum of its proper divisors (28086385).

64433343 is a wasteful number, since it uses less digits than its factorization.

64433343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652153.

The product of its digits is 31104, while the sum is 30.

The square root of 64433343 is about 8027.0382458289. The cubic root of 64433343 is about 400.9007679368.

Adding to 64433343 its reverse (34333446), we get a palindrome (98766789).

The spelling of 64433343 in words is "sixty-four million, four hundred thirty-three thousand, three hundred forty-three".

Divisors: 1 3 13 39 1652137 4956411 21477781 64433343