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BaseRepresentation
bin1000001000010…
…01000100000100
311202022122100121
410010021010010
5114424211224
610433351324
71455433654
oct404110404
9152278317
1068194564
1135548649
121aa08544
1311188b19
1490b2364
155ec0be4
hex4109104

68194564 has 9 divisors (see below), whose sum is σ = 119369397. Its totient is φ = 34089024.

The previous prime is 68194561. The next prime is 68194579. The reversal of 68194564 is 46549186.

The square root of 68194564 is 8258.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 37724164 + 30470400 = 6142^2 + 5520^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68194564.

It is not an unprimeable number, because it can be changed into a prime (68194561) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14452 + ... + 18580.

Almost surely, 268194564 is an apocalyptic number.

68194564 is the 8258-th square number.

It is an amenable number.

68194564 is a deficient number, since it is larger than the sum of its proper divisors (51174833).

68194564 is an frugal number, since it uses more digits than its factorization.

68194564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8262 (or 4131 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The cubic root of 68194564 is about 408.5544253558.

The spelling of 68194564 in words is "sixty-eight million, one hundred ninety-four thousand, five hundred sixty-four".