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67148071 = 1912372857
BaseRepresentation
bin1000000000010…
…01100100100111
311200100110211121
410000021210213
5114142214241
610355114411
71443514654
oct400114447
9150313747
1067148071
11349a3381
121a5a2a07
1310bb06b3
148cbcc2b
155d65ad1
hex4009927

67148071 has 8 divisors (see below), whose sum is σ = 70764080. Its totient is φ = 63540288.

The previous prime is 67148023. The next prime is 67148087. The reversal of 67148071 is 17084176.

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 67148071 - 29 = 67147559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67148771) 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, 22075 + ... + 24931.

It is an arithmetic number, because the mean of its divisors is an integer number (8845510).

Almost surely, 267148071 is an apocalyptic number.

67148071 is a deficient number, since it is larger than the sum of its proper divisors (3616009).

67148071 is a wasteful number, since it uses less digits than its factorization.

67148071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 67148071 is about 8194.3926559569. The cubic root of 67148071 is about 406.4537926314.

The spelling of 67148071 in words is "sixty-seven million, one hundred forty-eight thousand, seventy-one".

Divisors: 1 19 1237 2857 23503 54283 3534109 67148071