Search a number
-
+
67970785 = 571191467
BaseRepresentation
bin1000000110100…
…10011011100001
311201220021101111
410003102123201
5114400031120
610424503321
71453512361
oct403223341
9151807344
1067970785
1135405503
121a91ab41
131110accc
1490549a1
155e7975a
hex40d26e1

67970785 has 8 divisors (see below), whose sum is σ = 82714176. Its totient is φ = 53610480.

The previous prime is 67970783. The next prime is 67970797. The reversal of 67970785 is 58707976.

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

It is not a de Polignac number, because 67970785 - 21 = 67970783 is a prime.

It is a super-2 number, since 2×679707852 = 9240055227032450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67970783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95379 + ... + 96088.

It is an arithmetic number, because the mean of its divisors is an integer number (10339272).

Almost surely, 267970785 is an apocalyptic number.

It is an amenable number.

67970785 is a deficient number, since it is larger than the sum of its proper divisors (14743391).

67970785 is a wasteful number, since it uses less digits than its factorization.

67970785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191543.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 67970785 is about 8244.4396413583. The cubic root of 67970785 is about 408.1070481157.

The spelling of 67970785 in words is "sixty-seven million, nine hundred seventy thousand, seven hundred eighty-five".

Divisors: 1 5 71 355 191467 957335 13594157 67970785