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67013568 = 263531139
BaseRepresentation
bin1111111110100…
…0101111000000
311200002122100000
43333220233000
5114123413233
610352200000
71442414556
oct377505700
9150078300
1067013568
1134911316
121a539000
1310b643cb
148c85bd6
155d3ad13
hex3fe8bc0

67013568 has 168 divisors, whose sum is σ = 207101440. Its totient is φ = 21461760.

The previous prime is 67013561. The next prime is 67013579. The reversal of 67013568 is 86531076.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67013561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482043 + ... + 482181.

Almost surely, 267013568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67013568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103550720).

67013568 is an abundant number, since it is smaller than the sum of its proper divisors (140087872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67013568 is a wasteful number, since it uses less digits than its factorization.

67013568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 67013568 is about 8186.1815274278. The cubic root of 67013568 is about 406.1822246541.

The spelling of 67013568 in words is "sixty-seven million, thirteen thousand, five hundred sixty-eight".