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64893361 = 1371167421
BaseRepresentation
bin1111011110001…
…1000110110001
311112002220221211
43313203012301
5113103041421
610234520121
71415404321
oct367430661
9145086854
1064893361
11336a3385
1219896041
13105a1350
148893281
155a6c9e1
hex3de31b1

64893361 has 16 divisors (see below), whose sum is σ = 71463168. Its totient is φ = 58564800.

The previous prime is 64893343. The next prime is 64893377. The reversal of 64893361 is 16339846.

It is a cyclic number.

It is not a de Polignac number, because 64893361 - 213 = 64885169 is a prime.

It is a super-2 number, since 2×648933612 = 8422296603752642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64893391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153931 + ... + 154351.

It is an arithmetic number, because the mean of its divisors is an integer number (4466448).

Almost surely, 264893361 is an apocalyptic number.

It is an amenable number.

64893361 is a deficient number, since it is larger than the sum of its proper divisors (6569807).

64893361 is a wasteful number, since it uses less digits than its factorization.

64893361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672.

The product of its digits is 93312, while the sum is 40.

The square root of 64893361 is about 8055.6415635255. The cubic root of 64893361 is about 401.8525754148.

The spelling of 64893361 in words is "sixty-four million, eight hundred ninety-three thousand, three hundred sixty-one".

Divisors: 1 13 71 167 421 923 2171 5473 11857 29891 70307 154141 388583 913991 4991797 64893361