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64401083 = 1729130631
BaseRepresentation
bin1111010110101…
…0111010111011
311111011220200022
43311222322323
5112441313313
610220201055
71411254155
oct365527273
9144156608
1064401083
113339753a
121969918b
131045b266
1487a5ad5
1559c1c08
hex3d6aebb

64401083 has 8 divisors (see below), whose sum is σ = 70541280. Its totient is φ = 58522240.

The previous prime is 64401079. The next prime is 64401091. The reversal of 64401083 is 38010446.

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

It is a cyclic number.

It is not a de Polignac number, because 64401083 - 22 = 64401079 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64401383) 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, 64823 + ... + 65808.

It is an arithmetic number, because the mean of its divisors is an integer number (8817660).

Almost surely, 264401083 is an apocalyptic number.

64401083 is a deficient number, since it is larger than the sum of its proper divisors (6140197).

64401083 is a wasteful number, since it uses less digits than its factorization.

64401083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130677.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 64401083 is about 8025.0285357748. The cubic root of 64401083 is about 400.8338501104.

The spelling of 64401083 in words is "sixty-four million, four hundred one thousand, eighty-three".

Divisors: 1 17 29 493 130631 2220727 3788299 64401083