Search a number
-
+
67868497 = 295993907
BaseRepresentation
bin1000000101110…
…01011101010001
311201201002002001
410002321131101
5114333242442
610422354001
71452605224
oct402713521
9151632061
1067868497
1135345674
121a88b901
13110a3598
1490295bb
155e592b7
hex40b9751

67868497 has 8 divisors (see below), whose sum is σ = 70344000. Its totient is φ = 65402064.

The previous prime is 67868483. The next prime is 67868503. The reversal of 67868497 is 79486876.

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 67868497 - 219 = 67344209 is a prime.

It is a super-2 number, since 2×678684972 = 9212265770078018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67868447) 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, 15418 + ... + 19324.

It is an arithmetic number, because the mean of its divisors is an integer number (8793000).

Almost surely, 267868497 is an apocalyptic number.

It is an amenable number.

67868497 is a deficient number, since it is larger than the sum of its proper divisors (2475503).

67868497 is a wasteful number, since it uses less digits than its factorization.

67868497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535.

The product of its digits is 4064256, while the sum is 55.

The square root of 67868497 is about 8238.2338519855. The cubic root of 67868497 is about 407.9022277093.

The spelling of 67868497 in words is "sixty-seven million, eight hundred sixty-eight thousand, four hundred ninety-seven".

Divisors: 1 29 599 3907 17371 113303 2340293 67868497