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67027489 = 139947911
BaseRepresentation
bin1111111110110…
…0001000100001
311200010100102121
43333230020201
5114124334424
610352344241
71442503264
oct377541041
9150110377
1067027489
1134920821
121a545081
1310b6a849
148c8acdb
155d3eee4
hex3fec221

67027489 has 4 divisors (see below), whose sum is σ = 67076800. Its totient is φ = 66978180.

The previous prime is 67027483. The next prime is 67027507. The reversal of 67027489 is 98472076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67027489 - 29 = 67026977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67027483) 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, 22557 + ... + 25354.

It is an arithmetic number, because the mean of its divisors is an integer number (16769200).

Almost surely, 267027489 is an apocalyptic number.

It is an amenable number.

67027489 is a deficient number, since it is larger than the sum of its proper divisors (49311).

67027489 is a wasteful number, since it uses less digits than its factorization.

67027489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49310.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 67027489 is about 8187.0317576030. The cubic root of 67027489 is about 406.2103486665.

The spelling of 67027489 in words is "sixty-seven million, twenty-seven thousand, four hundred eighty-nine".

Divisors: 1 1399 47911 67027489