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67693201 = 173981953
BaseRepresentation
bin1000000100011…
…10101010010001
311201101011121121
410002032222101
5114312140301
610414522241
71451245162
oct402165221
9151334547
1067693201
11352359a4
121a806381
1311041864
148dc1769
155e223a1
hex408ea91

67693201 has 4 divisors (see below), whose sum is σ = 71675172. Its totient is φ = 63711232.

The previous prime is 67693187. The next prime is 67693217. The reversal of 67693201 is 10239676.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44422225 + 23270976 = 6665^2 + 4824^2 .

It is a cyclic number.

It is not a de Polignac number, because 67693201 - 25 = 67693169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67693261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1990960 + ... + 1990993.

It is an arithmetic number, because the mean of its divisors is an integer number (17918793).

Almost surely, 267693201 is an apocalyptic number.

It is an amenable number.

67693201 is a deficient number, since it is larger than the sum of its proper divisors (3981971).

67693201 is a wasteful number, since it uses less digits than its factorization.

67693201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981970.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 67693201 is about 8227.5877995923. The cubic root of 67693201 is about 407.5507377826.

The spelling of 67693201 in words is "sixty-seven million, six hundred ninety-three thousand, two hundred one".

Divisors: 1 17 3981953 67693201