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67220801 = 533174001
BaseRepresentation
bin1000000000110…
…11010101000001
311200111011121022
410000123111001
5114202031201
610400435225
71444240004
oct400332501
9150434538
1067220801
1134a42a8a
121a618b15
1310c0782b
148cdb53b
155d7c41b
hex401b541

67220801 has 8 divisors (see below), whose sum is σ = 68722344. Its totient is φ = 65728000.

The previous prime is 67220773. The next prime is 67220827. The reversal of 67220801 is 10802276.

It can be written as a sum of positive squares in 4 ways, for example, as 226576 + 66994225 = 476^2 + 8185^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-67220801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67220851) 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, 14801 + ... + 18801.

It is an arithmetic number, because the mean of its divisors is an integer number (8590293).

Almost surely, 267220801 is an apocalyptic number.

It is an amenable number.

67220801 is a deficient number, since it is larger than the sum of its proper divisors (1501543).

67220801 is a wasteful number, since it uses less digits than its factorization.

67220801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 67220801 is about 8198.8292456911. The cubic root of 67220801 is about 406.6004869314.

The spelling of 67220801 in words is "sixty-seven million, two hundred twenty thousand, eight hundred one".

Divisors: 1 53 317 4001 16801 212053 1268317 67220801