Search a number
67470081 = 373212861
BaseRepresentation
bin1000000010110…
…00001100000001
311200221211112220
410001120030001
5114233020311
610410041253
71446325530
oct401301401
9150854486
1067470081
11350a32a8
121a719229
1310c94133
148d64317
155dcb206
hex4058301

67470081 has 8 divisors (see below), whose sum is σ = 102811584. Its totient is φ = 38554320.

The previous prime is 67470079. The next prime is 67470089. The reversal of 67470081 is 18007476.

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

It is not a de Polignac number, because 67470081 - 21 = 67470079 is a prime.

It is a super-2 number, since 2×674700812 = 9104423660293122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (67470089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606410 + ... + 1606451.

It is an arithmetic number, because the mean of its divisors is an integer number (12851448).

Almost surely, 267470081 is an apocalyptic number.

It is an amenable number.

67470081 is a deficient number, since it is larger than the sum of its proper divisors (35341503).

67470081 is a wasteful number, since it uses less digits than its factorization.

67470081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212871.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 67470081 is about 8214.0173484112. The cubic root of 67470081 is about 407.1024760725.

The spelling of 67470081 in words is "sixty-seven million, four hundred seventy thousand, eighty-one".

Divisors: 1 3 7 21 3212861 9638583 22490027 67470081